Consider the following C program.

#include <stdio.h>
struct Outnode { 
    char x, y, z ; 
};

int main () { 
    struct Outnode p = {'1', '0', 'a'+2} ; 
    struct Outnode *q = &p ; 
    printf ("%c, %c", *((char*)q+1), *((char*)q+2)) ; 
    return 0 ; 
} 

The output of this program is

Consider the following C program:

#include<stdio.h> 

void fun1(char *s1, char *s2)  { 
     char *tmp;  
     tmp = s1; 
     s1 = s2; 
     s2 = tmp; 
} 

void fun2(char **s2, char **s2)  { 
     char *tmp; 
     tmp = *s1; 
     *s1 = *s2; 
     *s2 = tmp; 
}

int main ()  { 
     char *str1 = "Hi", *str2 = "Bye"; 
     fun1(str1, str2);     printf("%s %s", str1, str2); 
     fun2(&str1, &str2);   printf("%s %s", str1, str2); 
     return 0; 
} 

The output of the program above is

Consider the following C code. Assume that unsigned long int type length is 64 bits.

        unsigned long int fun(unsigned long int n)  { 
            unsigned long int i, j, j=0, sum = 0; 
            for (i = n; i > 1; i = i/2) j++; 
            for ( ; j > 1; j = j/2) sum++; 
            return sum; 
        } 

The value returned when we call fun with the input 2⁴⁰ is

Consider the following program written in pseudo-code. Assume that x and y are integers.

Count (x, y)  {
    if (y != 1)  {
        if (x != 1)  {
            print("*") ;
            Count (x/2, y) ;
        }
        else  {
             y = y - 1 ; 
             Count (1024, y) ; 
        }
    }
}

The number of times that the print statement is executed by the call Count(1024, 1024) is ______.

Consider the following C code:

             #include <stdio.h>
             int *assignval(int *x, int val)   {
                  *x = val;
                  return x;
             }

             void main ( )  {
                  int  *x = malloc(sizeof(int));
                  if(NULL == x)  return;
                     x = assignval(x, 0);
                     if(x)  {
                           x = (int *)malloc(size of(int));
                           if(NULL == x)  return;
                              x = assignval(x, 10);
                     }
                     printf("%dn",  *x);
                     free(x);
              }

The code suffers from which one of the following problems:

Consider the following two functions.

void fun1(int n)   {                 void fun2(int n)   {
        if(n == 0)  return;                  if(n == 0)  return;
        printf("%d", n);                     printf("%d", n);
        fun2(n - 2);                         fun1(++n);
        printf("%d", n);                     printf("%d", n);
}                                    }

The output printed when fun1(5) is called is

Consider the C functions foo and bar given below:

         int foo(int val)   {
                 int x = 0;
                 while (val>0)   {
                    x = x + foo(val--); 
                 }
                 return val;
               }

               int bar(int val)   {
                  int x = 0;
                  while (val>0)   {
                      x = x + bar(val-1);
                  }
                  return val;
               }

Invocations of foo(3) and bar(3) will result in:

Consider the following C program.

#include <stdio.h>
#include <string.h>

void printlength (char*s, char*t)   {
   unsigned int c = 0;
   int len = ((strlen(s) - strlen(t)) > c) ? strlen(s):strlen(t);
   printf("%d\n", len);
}

void main ()  { 
   char*x = "abc";
   char*y = "defgh";
   printlength(x,y);
}

Recall that strlen is defined in string.h as returning a value of type size_t, which is an unsigned int. The output of the program is _________.

The output of executing the following C program is __________.

           #include<stdio.h>
           int total (int v)   {
               static int count=0;
               while(v)   {
                   count += v&1;
                   v ≫= 1;
               }     
               return count;
           }

           void main()    {
               static int x = 0;
               int i = 5;
               for(; 1> 0; i--)    {
                  x = x + total(i);
               }
               printf("%d\n", x);
           }

Match the following:

Consider the following function implemented in C:

void printxy (int x, int y)   {
      int *ptr;
      x = 0;
      ptr = &x;
      y = *ptr;
      *ptr = 1;
      printf("%d,%d",x,y);
}

The output of invoking printxy(1, 1) is

Consider the C program fragment below which is meant to divide x and y using repeated subtractions. The variables x, y, q and r are all unsigned int.

          while (r >= y)  {
              r = r - y;
              q = q + 1;
          }

Which of the following conditions on the variables x, y, q and r before the execution of the fragment will ensure that the loop terminates in a state satisfying the condition x == (y*q + r)?

Consider the following snippet of a C program. Assume that swap(&x, &y)  exchanges the contents of x and y.

int main ()  {
      int array[] = {3, 5, 1, 4, 6, 2};
      int done = 0;
      int i;

      while (done == 0)  {
           done = 1;
           for (i=0; i<=4; i++)  {
                if (array[i] < array[i+1])  {
                       swap (&array[i], &array[i+1]);
                       done = 0;
                }
           }
           for (i=5; i>=1; i--)  {
                if (array[i] > array[i-1])   {
                      swap(&array[i], &array[i-1]);
                      done=0;
                }
           }
       }
       printf("%d", array[3]);
}

The output of the program is ___________.

Consider the following C program:

#include <stdio.h>
int main()
{
    int m = 10;
    int n, n1;
    n = ++m;
    n1 = m++;
    n--;
    --n1;
    n -= n1;
    printf("%d",n);
    return 0;
}

The output of the program is _______.

Consider the following C program.

#include<stdio.h>
#include<string.h>
int main ()  {
  char* c = "GATECSIT2017";
  char* p = c;
  printf("%d", (int) strlen (c + 2[p] - 6[p] - 1));
  return 0;
}

The output of the program is __________.

Consider the following C program.

void f(int, short);
void main ()
{
     int i = 100;
     short s = 12;
     short *p = &s;
     __________ ;         // call to f()
}

Which one of the following expressions, when placed in the blank above, will NOT result in a type checking error?

Consider the following C program.

#include<stdio.h>
void mystery(int *ptra, int *ptrb) {
      int *temp;
      temp = ptrb;
      ptrb = ptra;
      ptra = temp;
}
int main() {
      int a=2016, b=0, c=4, d=42;
      mystery(&a, &b);
      if (a < c)
             mystery(&c, &a);
      mystery(&a, &d);
      printf("%d\n", a);
}

The output of the program is ________.

The following function computes the maximum value contained in an integer array p[] of size n (n >= 1).

       int max(int *p, int n) {
           int a=0, b=n-1;
           
           while (__________) {
               if (p[a] <= p[b]) {a = a+1;}
               else                 {b = b-1;}
           }

           return p[a];
       }

The missing loop condition is

What will be the output of the following C program?

void count(int n)  {
     static int d=1;

     printf("%d ", n);
     printf("%d ", d);
     d++;
     if(n>1) count(n-1);
     printf("%d ", d);
}

void main() {
     count(3);
}

What will be the output of the following pseudo-code when parameters are passed by reference and dynamic scoping is assumed?

       a=3;
       void n(x) {x = x * a; print(x);}
       void m(y) {a = 1; a = y - a; n(a); print(a);}
       void main() {m(a);}

The value printed by the following program is __________.

     void f(int* p, int m) {
        m = m + 5;
        *p = *p + m;
        return;
     }

     void main() {
        int i=5, j=10;
        f(&i, j);
        printf("%d", i+j);
     }

The following function computes X^Y for positive integers X and Y.

       int exp (int X, int Y) {
           int res = 1, a = X, b = Y;

           while ( b != 0 ){
               if ( b%2 == 0) { a = a*a; b = b/2; }
               else           { res = res*a; b = b-1; }
           }
           return res;

        }

Which one of the following conditions is TRUE before every iteration of the loop?

Consider the following program:

    int f(int *p, int n)
    {
       if (n <= 1) return 0;
       else return max (f(p+1,n-1),p[0]-p[1]);
    }

    int main()
    {
       int a[] = {3,5,2,6,4};
       printf("%d", f(a,5));
    }

The value printed by this program is __________.

The output of the following C program is __________.

void f1 (int a, int b)
{
  int c;
  c=a; a=b; b=c;
}
void f2 (int *a, int *b)
{
  int c;
  c=*a; *a=*b;*b=c;
}
int main()
{
  int a=4, b=5, c=6;
  f1(a, b);
  f2(&b, &c);
  printf (“%d”, c-a-b);
  return 0;
}

What is the output of the following C code? Assume that the address of x is 2000 (in decimal) and an integer requires four bytes of memory.

 
int main() { 
        unsigned int x[4][3] = 
          {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}, {10, 11, 12}};
        printf("%u, %u, %u", x+3, *(x+3), *(x+2)+3);
}

Consider the following pseudo code, where x and y are positive integers.

begin
   q := 0
   r := x
while r >= y do
   begin
      r := r – y
      q := q + 1
   end
end

The post condition that needs to be satisfied after the program terminates is

Consider the following C program segment.

while (first <= last)
{
   if (array [middle] < search)
      first = middle +1;
   else if (array [middle] == search)
      found = True;
   else last = middle – 1;
   middle = (first + last)/2;
}
if (first < last) not Present = True;

The cyclomatic complexity of the program segment is __________.

Consider the following C function.

int fun1 (int n)
{
   int i, j, k, p, q = 0;
   for (i = 1; i<n; ++i)
   {
      p = 0;
      for (j = n; j > 1; j = j/2)
         ++p;
      for (k = 1; k < p; k = k*2)
         ++q;
   }
   return q;
}

Which one of the following most closely approximates the return value of the function fun1?

Consider the following function written the C programming language.

       void foo(char *a) {
          if(*a && *a != ' ') {
              foo(a+1);
              putchar(*a);
           }
       }

The output of the above function on input "ABCD EFGH" is

Consider the following C functions

      int fun(int n) {
          int x = 1, k;
          if(n == 1) return x;
          for(k = 1; k < n; ++k)
              x = x + fun(k) * fun(n - k);
          return x;
      }

The return value of fun(5) is _______.

Consider the C program below.

#include 
int *A, stkTop;
int stkFunc (int opcode, int val)
{
    static int size=0, stkTop=0;
    switch (opcode)
    {
    case -1:
        size = val;
        break;
    case 0:
        if (stkTop < size ) A[stkTop++]=val;
        break;
    default:
        if (stkTop) return A[--stkTop];
    }
    return -1;
}
int main()
{
    int B[20];
    A=B;
    stkTop = -1;
    stkFunc (-1, 10);
    stkFunc (0, 5);
    stkFunc (0, 10);
    printf ("%dn", stkFunc(1, 0)+ stkFunc(1, 0));
}

The value printed by the above program is ___________

Consider the following C program segment.

# include 
int main( )
{
    char s1[7] = "1234", *p;
    p = s1 + 2;
    *p = '0' ;
    printf ("%s", s1);
} 

What will be printed by the program?

Consider the following recursive C function. If get(6) function is being called in main() then how many times will the get() function be invoked before returning to the main()?

{
   if (n < 1) return;
   get(n-1);
   get(n-3);
   printf("%d", n);
}

Consider the following C program.

# include 
int main( )
{
  static int a[] = {10, 20, 30, 40, 50};
  static int *p[] = {a, a+3, a+4, a+1, a+2};
  int **ptr = p;
  ptr++;
  printf("%d%d", ptr - p, **ptr};
}

The output of the program is _________.

Consider the following C program:

# include 
int main( )
{
   int i, j, k = 0;
   j = 2 * 3 / 4 + 2.0 / 5 + 8 / 5;
   k  -= --j;
   for (i = 0; i < 5; i++)
   {
      switch(i + k)
      {
         case 1:
         case 2: printf("n%d", i + k);
         case 3: printf("n%d", i + k);
         default: printf("n%d", i + k);
      }
   }
   return 0;
}

The number of times printf statement is executed is __________.

Consider the following C program. The output of the program is __________.

# include 
int f1(void);
int f2(void);
int f3(void);
int x = 10;
int main()
{
    int x = 1;
    x += f1() + f2() + f3() + f2();
    pirntf("%d", x);
    return 0;
}
 
int f1()
{
    int x = 25;
    x++;
    return x;
}
 
int f2( )
{
    static int x = 50;
    x++;
    return x;
}
 
int f3( )
{
    x *= 10;
    return x;
}

Consider the following program in C language:

#include 
main()
{
    int i;
    int *pi = &i;
    scanf("%d", pi);
    printf("%dn", i+5);
}

Which one of the following statements is TRUE?

Consider the function func shown below:

int func(int num)
{
    int count = 0;
    while (num)
    {
        count++;
        num >>= 1;
    }
    return (count);
}

The value returned by func(435)is __________.

Suppose n and p are unsigned int variables in a C program. We wish to set p to ⁿC₃. If n is large, which one of the following statements is most likely to set p  correctly?

Consider the following function

double f(double x){
  if (abs(x*x - 3) < 0.01) return x;
  else return f(x/2 + 1.5/x);
}

Give a value q (to 2 decimals) such that f(q) will return q:_____.

Consider the C function given below.

int f(int j)
{
  static int i = 50;
  int k;
  if (i == j)
  {
    printf(“something”);
    k = f(i);
    return 0;
  }
  else return 0;
}

Which one of the following is TRUE?

Let A be a square matrix of size n x n. Consider the following program. What is the expected output?

C = 100
for i = 1 to n do
    for j = 1 to n do
    {
        Temp = A[i][j] + C
        A[i][j] = A[j][i]
        A[j][i] = Temp - C
    } 
for i = 1 to n do
    for j = 1 to n do
        Output(A[i][j]);

The minimum number of arithmetic operations required to evaluate the polynomial P(X) = X⁵ + 4X³ + 6X + 5 for a given value of X, using only one temporary variable is ________.

Consider the following function:

int unknown(int n) {
    int i, j, k = 0;
    for (i  = n/2; i <= n; i++)
        for (j = 2; j <= n; j = j * 2)
            k = k + n/2;
    return k;
 }

Consider the following languages.

L₁ = {0^p1^q0^r|p,q,r≥0}
L₂ = {0^p1^q0^r|p,q,r≥0, p≠r}

Which one of the following statements is FALSE?

The procedure given below is required to find and replace certain characters inside an input character string supplied in array A. The characters to be replaced are supplied in array oldc, while their respective replacement characters are supplied in array newc. Array A has a fixed length of five characters, while arrays oldc and newc contain three characters each. However, the procedure is flawed

void find_and_replace(char *A, char *oldc, char *newc) {
    for (int i = 0; i < 5; i++)
       for (int j = 0; j < 3; j++)
           if (A[i] == oldc[j]) A[i] = newc[j];
}

The procedure is tested with the following four test cases

(1) oldc = "abc", newc = "dab" 
(2) oldc = "cde", newc = "bcd" 
(3) oldc = "bca", newc = "cda" 
(4) oldc = "abc", newc = "bac" 

If array A is made to hold the string “abcde”, which of the above four sest cases will be successful in exposing the flaw in this procedure?

What will be the output of the following C program segment?

char inchar = 'A';
switch (inchar)
{
case 'A' :
    printf ("choice A n") ;
case 'B' :
    printf ("choice B ") ;
case 'C' :
case 'D' :
case 'E' :
default:
    printf ("No Choice") ;
}

Consider the following C program

int a, b, c = 0;
void prtFun (void);
int main ()
{
    static int a = 1; /* line 1 */
    prtFun();
    a += 1;
    prtFun();
    printf ( "n %d %d " , a, b) ;
}
  
void prtFun (void)
{
    static int a = 2; /* line 2 */
    int b = 1;
    a += ++b;
    printf (" n %d %d " , a, b);
}

What output will be generated by the given code segment?

Consider the following C program

int a, b, c = 0;
void prtFun (void);
int main ()
{
    static int a = 1; /* line 1 */
    prtFun();
    a += 1;
    prtFun();
    printf ( "n %d %d " , a, b) ;
}
  
void prtFun (void)
{
    static int a = 2; /* line 2 */
    int b = 1;
    a += ++b;
    printf (" n %d %d " , a, b);
}

What output will be generated by the given code segment if:

Line 1 is replaced by auto int a = 1;
Line 2 is replaced by register int a = 2;

What does the following fragment of C-program print?

char c[] = "GATE2011";
char *p =c;
printf("%s", p + p[3] - p[1]) ; 

Consider the following recursive C function that takes two arguments.

unsigned int foo(unsigned int n, unsigned int r)  {
       if(n>0) return ((n%r) + foo(n/r,r));
       else return 0;
}

What is the return value of the function foo when it is called as foo(513,2)?

Consider the following recursive C function that takes two arguments

unsigned int foo(unsigned int n, unsigned int r) {
  if (n  > 0) return (n%r +  foo (n/r, r ));
  else return 0;
}

What is the return value of the function foo when it is called as foo(345, 10) ?

What does the following program print?

#include
void f(int *p, int *q)
{
  p = q;
 *p = 2;
}
int i = 0, j = 1;
int main()
{
  f(&i, &j);
  printf("%d %d n", i, j);
  getchar();
  return 0;
}

What is the value printed by the following C program

#include
int f(int *a, int n)
{
  if(n <= 0) return 0;
  else if(*a % 2 == 0) return *a + f(a+1, n-1);
  else return *a - f(a+1, n-1);
}
  
int main()
{
  int a[] = {12, 7, 13, 4, 11, 6};
  printf("%d", f(a, 6));
  getchar();
  return 0;
}

Consider the program below:

#include 
int fun(int n, int *f_p)
{
    int t, f;
    if (n <= 1)
    {
        *f_p = 1;
        return 1;
    }
    t = fun(n- 1,f_p);
    f = t+ * f_p;
    *f_p = t;
    return f;
}
 
int main()
{
    int x = 15;
    printf (" %d n", fun(5, &x));
    return 0;
}

The value printed is:

Which combination of the integer variables x, y and z makes the variable a get the value 4 in the following expression?

     a = (x > y) ? ((x > z) ? x : z) : ((y > z) ? y : z) 

What is printed by the following C program?

int f(int x, int *py, int **ppz)           void main()
{                                               { 
  int y, z;                                      int c, *b, **a; 
  **ppz += 1; z = **ppz;                         c = 4; b = &c; a = &b;
  *py += 2; y = *py;                             printf("%d",f(c,b,a)); 
  x += 3;                                       }  
  return x + y + z;                                       
}  

Choose the correct option to fill ?1 and ?2 so that the program below prints an input string in reverse order. Assume that the input string is terminated by a newline character.

void reverse(void)
 {
  int c;
  if(?1)reverse();
  ?2
}
int main(){
  printf("Enter Text"); printf("n");
  reverse();printf("n") ;
}

Consider the following C program

int f1 (int n)
{
  if(n == 0||n == 1)
    return n;
  else
    return (2*f1(n-1)+3*f1(n-2));
}
 
int f2 (int n)
{
  int i;
  int X[N], Y[N], Z[N];

  X[0]=Y[0]=Z[0]=0;
  X[1]=1; Y[1]=2; Z[1]=3;
  for(i=2; i<=n; i++) {
    X[i] = Y[i-1] + Z[i-2];
    Y[i] = 2*X[i];
    Z[i] = 3*X[i];
  }
  return X[n];
}

f1(8) and f2(8) return the values

Consider the following C function:

int f(int n)
{
    static int r = 0;
    if (n <= 0) return 1;
    if (n > 3)
    {
        r = n;
        return f(n-2)+2;
    }
    return f(n-1)+r;
}
 
int main()
{
    printf("%d", f(5));
}

Consider the following code written in a pass-by-reference language like FORTRAN and these statements about the code.

            subroutine swap(ix,iy)
                    it = ix
            L1 :    ix = iy
            L2 :    iy = it
                end
                ia = 3
                ib = 8
                call swap (ia, 1b+5)
                print *, ia, ib
                end 

S1: The compiler will generate code to allocate a temporary nameless cell, 
    initialize it to 13, and pass the address of the cell swap  
S2: On execution the code will generate a runtime error on line L1 
S3: On execution the code will generate a runtime error on line L2 
S4: The program will print 13 and 8 
S5: The program will print 13 and -2 

Exactly the following set of statement(s) is correct:

Consider this C code to swap two integers and these five statements after it:

void swap(int *px, int *py) { 
   *px = *px - *py; 
   *py = *px + *py; 
   *px = *py - *px; 
}

S1: will generate a compilation error 
S2: may generate a segmentation fault at runtime depending on the arguments passed 
S3: correctly implements the swap procedure for all input pointers referring 
    to integers  stored in memory locations accessible to the process 
S4: implements the swap procedure correctly for some but not all valid input pointers 
S5: may add or subtract integers and pointers.

What does the following C-statement declare?

    int ( * f) (int * ) ; 

A common property of logic programming languages and functional languages is:

Which one of the following are essential features of an object-oriented programming language?

(i) Abstraction and encapsulation
(ii) Strictly-typedness
(iii) Type-safe property coupled with sub-type rule
(iv) Polymorphism in the presence of inheritance

Consider the following C-program:

void foo(int n, int sum) {
  int k = 0, j = 0;
  if (n == 0) return;
  k = n % 10; j = n / 10;
  sum = sum + k;
  foo(j, sum);
  printf ("%d,", k);
}
  
int main () {
  int a = 2048, sum = 0;
  foo(a, sum);
  printf ("%d\n", sum);
}

What does the above program print?

Consider the following C-program:

double foo (double);    /* Line 1 */
 
int main() {
  double da, db;
 
  // input da
 
  db = foo(da);
}
 
double foo(double a) {
  return a;
} 

The above code compiled without any error or warning. If Line 1 is deleted, the above code will show:

Consider the following C function.

void swap (int a, int b)
{
   int temp;
   temp = a;
   a = b;
   b = temp;
}

In order to exchange the values of two variables x and y.

Consider the following C function:

     int f(int n)
     {
        static int i = 1;
        if (n >= 5)
           return n;
        n = n+i;
        i++;
        return f(n);
     } 

The value returned by f(1) is

Consider the following program fragment for reversing the digits in a given integer to obtain a new integer. Let n = d₁d₂…d_m.

     int n, rev;
     rev = 0;
     while (n > 0)
     {
        rev = rev*10 + n%10;
        n = n/10;
     }

The loop invariant condition at the end of the ith iteration is:

Consider the following C program segment:

     char p[20];
     char *s = "string";
     int length = strlen(s);
     int i;
     for (i = 0; i < length; i++)
          p[i] = s[length — i];
     printf("%s",p); 

The output of the program is

It is desired to design an object-oriented employee record system for a company. Each employee has a name, unique id and salary. Employees belong to different categories and their salary is determined by their category. The functions to get Name, getld and compute salary are required. Given the class hierarchy below, possible locations for these functions are:

(i) getld is implemented in the superclass
(ii) getld is implemented in the subclass
(iii) getName is an abstract function in the superclass
(iv) getName is implemented in the superclass
(v) getName is implemented in the subclass
(vi) getSalary is an abstract function in the superclass
(vii) getSalary is implemented in the superclass
(viii) getSalary is implemented in the subclass

Choose the best design

Consider the following C program

     main()
     {   int x, y, m, n;
         scanf ("%d %d", &x, &y);
         /* Assume x > 0 and y > 0  */
         m = x; n = y;
         while (m! = n)
            {    if (m > n)
                   m = m - n;
                 else
                   n = n - m;
            } 
          print f ("% d", n);
          }

The program computes

Choose the best matching between the programming styles in Group 1 and their characteristics in Group 2.

      Group-1		        Group-2 
 P. Functional	      1. Command-based, procedural
 Q. Logic	      2. Imperative, abstract data type
 R. Object-oriented   3. Side-effect free, declarative, expression evaluation
 S. Imperative	      4. Declarative, clausal representation, theorem proving 

Consider the following logic program P

A(x) <- B(x, y), C(y) 
     <- B(x,x) 

Which of the following first order sentences is equivalent to P?

The following program fragment is written in a programming language that allows variables and does not allow nested declarations of functions.

global int i = 100, j = 5;
void P(x)
{
    int i = 10;
    print(x + 10);
    i = 200;
    j = 20;
    print(x);
}
main()
{
    P(i + j);
}

If the programming language uses static scoping and call by need parameter passing mechanism, the values printed by the above program are

The following program fragment is written in a programming language that allows variables and does not allow nested declarations of functions.

global int i = 100, j = 5;
void P(x)
{
    int i = 10;
    print(x + 10);
    i = 200;
    j = 20;
    print(x);
}
main()
{
    P(i + j);
}

If the programming language uses dynamic scoping and call by name parameter passing mechanism, the values printed by the above program are:

Consider the following class definitions in a hypothetical Object Oriented language that supports inheritance and uses dynamic binding. The language should not be assumed to be either Java or C++, though the syntax is similar.

Class P {
    void f(int i) {
        print(i);
    }
}

Class Q subclass of P {
    void f(int i) {
        print(2*i);
    }
} 

Now consider the following program fragment:

Px = new Q();
Qy = new Q();
Pz = new Q();
x.f(1); ((P)y).f(1); z.f(1); 

Here ((P)y) denotes a typecast of y to P. The output produced by executing the above program fragment will be

In the following C program fragment, j, k n and TwoLog_n are interger variables, and A is an array of integers. The variable n is initialized to an integer ≥3, and TwoLog_n is initialized to the value of 2*⌈log₂(n)⌉

   for (k = 3; k < = n; k++)
               A[k] = 0;
   for (k = 2; k < = TwoLog_n; k++)
          for (j = k + 1; j < = n; j++)
                    A[j] = A[j] || (j%k);
   for (j = 3; j < = n; j++)
          if (!A[j]) printf("%d", j); 

The set of numbers printed by this program fragment is

Consider the C program shown below.

#include 
#define print(x) printf("%d", x)
int x;
void Q(int z)
{
    z += x;
    print(z);
}
void P(int *y)
{
    int x = *y + 2;
    Q(x);
    *y = x - 1;
    print(x);
}
main(void)
{
    x = 5;
    P(&x);
    print(x);
} 

The output of this program is

In the C language

What is printed by the print statements in the program P1 assuming call by reference parameter passing?

Program P1()
{
   x = 10;
   y = 3;
   func1(y,x,x);
   print x;
   print y;
}
func1(x,y,z)
{
   y = y+4;
   z = x+y+z;
} 

Consider the following program

                Program P2 
                   var n: int: 
                   procedure W(var x: int) 
                   begin 
                          x=x+1; 
                          print x;   
                   end 

                procedure D 
                begin  
                          var n: int; 
                          n=3; 
                          W(n);  
                End 
            begin               //beginP2 
                n=10; 
                D; 
            end  

If the language has dynamic scoping and parameters are passed by reference, what will be printed by the program?

Consider the following C program:

           void abc(char*s)
           {
              if(s[0]==’\0’)return;
              abc(s+1);
              abc(s+1);
              printf(“%c”,s[0]);
           }
           main()
           {  abc(“123”)
           }  

(a) What will be the output of the program?
(b) If abc(s) is called with a null-terminated string s of length n characters (not counting the null (‘\0’) character), how many characters will be printed by abc(s)?

The following C declarations

struct node
{
   int i;
   float j;
};
struct node *s[10]; 

define s to be

The most appropriate matching for the following pairs

    X: m=malloc(5); m= NULL;        1: using dangling pointers
    Y: free(n); n->value=5;         2: using uninitialized pointers
    Z: char *p; *p = ’a’;           3. lost memory  

is:

Aliasing in the context of programming languages refers to

Consider the following C declaration

struct {
    short s [5]
    union {
    float y;
    long z;
    } u;
} t; 

Assume that objects of the type short, float and long occupy 2 bytes, 4 bytes and 8 bytes, respectively. The memory requirement for variable t, ignoring alignment considerations, is

The value of j at the end of the execution of the following C program.

int incr(int i)
{
   static int count = 0;
   count = count + i;
   return (count);
}
main()
{
   int i,j;
   for (i = 0; i <= 4; i++)
      j = incr(i);
} 

is

Consider the following program is pseudo-Pascal syntax.

    program main;
       var x: integer;
       procedure Q [z:integer);
       begin
          z: z + x;
          writeln(z)
       end;
    procedure P (y:integer);
          var x: integer;
       begin
          x: y + 2;
          Q(x);
          writeln(x)
       end;
       begin 
          x:=5;
          P(x);
          Q(x);
          writeln(x)
       end. 

What is the output of the program, when
(a) The parameter passing mechanism is call-by-value and the scope rule is static scooping?

(b) The parameter passing mechanism is call-by-reference and the scope rule is dynamic scooping?

Given the programming constructs (i) assignment (ii) for loops where the loop parameter cannot be changed within the loop (iii) if-then-else (iv) forward go to (v) arbitrary go to (vi) non-recursive procedure call (vii) recursive procedure/function call (viii) repeat loop, which constructs will you not include in a programming language such that it should be possible to program the terminates (i.e., halting) function in the same programming language.

Consider the following C function definition.

int Trial (int a, int b, int c)
{
    if ((a >= b) && (c < b) return b;
    else if (a >= b) return Trial(a, c, b);
    else return Trial(b, a, c);
} 

The function Trial:

Suppose we have a function HALTS which when applied to any arbitrary function f and its arguments will say TRUE if function f terminates for those arguments and FALSE otherwise. Example, Given the following function definition.
FACTORIAL (N) = IF(N=0) THEN 1 ELSE N*FACTORIAL (N-1)
Then HALTS(FACTORIAL 4) = TRUE and HATS(FACTORIAL - 5) = FALSE

Let us define the function FUNNY(f) = IF HALTS(ff) THEN not(ff) ELSE TRUE
(a) Show that FUNNY terminates for all functions f.
(b) Use (a) to prove (by contradiction) that it is not possible to have a function like HALTS which for arbitrary functions and inputs says whether it will terminate on that input or not.

What will be the output of the following program assuming that parameter passing is

(i) call by value
(ii) call by reference
(iii) call by copy restore

      procedure P{x, y, z};
                        begin y:y+1; z: x+x end; 
      begin
                        a:= b:= 3;
                        P(a+b, a, a);
                        Print(a) 
      end. 

Consider the following pascal program skeleton:

                        var a,x,...;
                        procedure readarray;
                              var i,....;
                              begin
                                             ...:=a...
                              end;
      procedure exchange(...);
                       begin
                                             ...:=a...
                                             ...:=x...
                       end;
      procedure qsort(...);
                       var k,v,...;
                       function partition (...)...;
                              var i,j,...;
                              begin
                              ...:=a...
                              ...:=v...
                              end;
                       begin
                              .
                              .
                       end;
      begin
                       .
                       .
      end; 

Assume that at a given point in time during program execution, following procedures are active: sort, qsort(1,9), qsort(1.3), partition(1,3), exchange(1,3).

Show snapshots of the runtime stack with access links after each of the activations.

What value would the following function return for the input x=95?

                 Function fun (x:integer):integer;
      Begin
                 If x > 100 then fun = x - 10
                 Else fun = fun(fun(x + 11))
      End;  

What is the result of the following program?

program side-effect (input, output);
    var x, result: integer;
    function f (var x:integer):integer;
    begin
        x:x+1;f:=x;
    end;
begin
    x:=5;
    result:=f(x)*f(x);
    writeln(result);
end; 

Given the following Pascal-like program segment

Procedure A;
  x,y: integer;
   Procedure B;
    x,z: real
    S1
   end B;
   Procedure C;
      i: integer;
       S2
   end C;
end A; 

The variables accessible in S1 and S2 are

In the following Pascal program segment, what is the value of X after the execution of the program segment?
X:=-10; Y:=20;
If X > Y then if X < 0 then X:=abs(X) else X:=2*X;

Which of the following strings can definitely be said to be tokens without looking at the next input character while compiling a Pascal program?

 I. begin           II. program           III. <>   

Assume that X and Y are non-zero positive integers. What does the following Pascal program segment do?

 while X <>Y do
 if X > Y then
    X := X – Y
 else
    Y := Y – X;
 write(X); 

What is the value of X printed by the following program?

 program COMPUTE (input, output);
    var
                  X:integer;
    procedure FIND (X:real);
                  begin
                  X:=sqrt(X);
                  end;
   begin
                  X:=2
                  Find(X)
                  Writeln(X)
   end 

A variant record in Pascal is defined by

                    type varirec      =   record
                                          number : integer;
                                          case (var1,var2) of
                                          var1: (x,y : integer);
                                          var2: (p.q.: real)
                        end
                    end   

Suppose an array of 100 records was declared on a machine which uses 4 bytes for an integer and 8 bytes for a real. How much space would the compiler have to reserve for the array?

Consider the following high level program segment. Give the contents of the memory locations for variables W, X, Y and Z after the execution of the program segment. The values of the variables A and B are 5 CH and 92H, respectively. Also indicate error conditions if any.

 var
     A, B, W, X, Y   :unsigned byte;
     Z               :unsigned integer, (each integer is represented by two bytes)
 begin
     X               :=A+B
     Y               :=abs(bA-b);
     W               :=A-B
     Z               :=A*B
 End;  

(a) Consider the following Pascal function where A and B are non-zero positive integers. What is the value of GET(3,2)?

 function GET(A,B:integer);integer;
 begin
          if B = 0 then
    GET:=1
 else if A < B then
    GET:=0
 else
    GET:=GET(A-1,B)+GET(A-1,B-1)
 end ; 

(b) The Pascal procedure given for computing the transpose of an N × N (N>1) matrix A of integers has an error. Find the error and correct it.
Assume that the following declaration are made in the main program

 const
     MAXSIZE=20;
 type
     INTARR=array [1.,MAXSIZE,1..MAXSIZE] of integer;
 Procedure TRANSPOSE (var A: INTARR; N : integer);
 var
     I, J, TMP, integer;
 begin
     for I:=1 to NO – 1 do
     for J:=1 to N do
     begin
          TMP: = A[I,J];
          A[I,J]:=A[J,I];
          A(J,I):=TMP
     end
 end; 

(a) Using the scope rules of Pascal determine the declaration that apply to each occurrence of the names A and B in the following program segment.

 procedure T(U, V, X, Y: integer);
 var
    A: record
        A, B : integer
    end; 
    B: record
        B, A : integer
    end;
 begin
    with A do
        begin
          A:=4;
          B:=V
 end;
 with B do
    begin
         A:=X;
         B:=Y
    end
 end; 

(b) Find the lexical errors in the following Pascal statement:

     if A > 1, then B = 2.5A else read (C);  

The following is an incomplete Pascal function to convert a given decimal integer (in the range -8 to +7) into a binary integer in 2’s complement representation. Determine the expression A, B, C that complete program.

 function TWOSCOMP (N:integer):integer;
 var
 RAM, EXPONENT:integer;
 BINARY :integer;
 begin
 if(N>=-8) and (N<=+7) then
     begin
 if N<0 then
     N : = A;
 BINARY:=0;
 EXPONENT:=1;
 while N<>0 do
     begin
       REM:=N mod 2;
       BINARY:=BINARY + B*EXPONENT;
       EXPONENT:=EXPONENT*10;
       N := C
     end
 TWOSCOMP:=BINARY
 end
 end; 

What function of x, n is computed by this program?

 Function what (x, n:integer): integer:
 Var
     value : integer;
     begin
     value:=1
     if n>0 then
 begin
     if n mod 2 = 1 then
     value:=value*x;
     value:=value*what(x*x, n div 2);
     end;
     what:value
     end; 

Consider the program below:

 Program main;
    var r:integer;
    procedure two;
    begin write (r) end;
    procedure one;
    var r:integer;
    begin r:=5 two; end
    begin r:=2;
    two; one; two;
    end. 

What is printed by the above program if
(i) Static scoping is assumed for all variables;
(ii) Dynamic scoping is assumed for all variables.
Give reasons for your answer.

An array a contains n integers in non-decreasing order, A[1] ≤ A[2] ≤ ... ≤ A[n]. Describe, using Pascal like pseudo code, a linear time algorithm to find i, j, such that A[i] + A[j] = a given integer M, if such i, j exist.

(a) Draw a precedence graph for the following sequential code. The statements are numbered from S₁ to S₆

 S1       read n
 S2       i:=1
 S3       if i>n goto next
 S4       a(i):=i+1
 S5       i:=i+1
 S6       next : Write a(i) 

(b) Can this graph be converted to a concurrent program using parbegin-parend construct only?

Consider the following C functions.

  int fun1 (int n)  {                              int fun2 (int n)  {
    static int i = 0;                                static int i = 0;  
    if (n > 0)  {                                    if (n > 0)  { 
       ++i;                                              i = i + fun1 (n);   
       fun1 (n-1);                                       fun2 (n-1);
    }                                                 }
    return (i);                                           return (i);
  }                                                 } 

The return value of fun2 (5) is _______.

Program PARAM (input, output);
 var m, n : integer;
 procedure P (var, x, y : integer);
    var m : integer;
    begin
      m : = 1;
      x : = y + 1
    end;
 procedure Q (x:integer; vary : integer);
    begin
      x:=y+1;
    end;
 begin
    m:=0; P(m,m); write (m);
    n:=0; Q(n*1,n); write (n)
 end 

The value of m, output by the program PARAM is:

Program PARAM (input, output);
 var m, n : integer;
 procedure P (var, x, y : integer);
    var m : integer;
    begin
      m : = 1;
      x : = y + 1
    end;
 procedure Q (x:integer; vary : integer);
    begin
      x:=y+1;
    end;
 begin
    m:=0; P(m,m); write (m);
    n:=0; Q(n*1,n); write (n)
 end 

The value of n, output by the program PARAM is:

Program PARAM (input, output);
 var m, n : integer;
 procedure P (var, x, y : integer);
    var m : integer;
    begin
      m : = 1;
      x : = y + 1
    end;
 procedure Q (x:integer; vary : integer);
    begin
      x:=y+1;
    end;
 begin
    m:=0; P(m,m); write (m);
    n:=0; Q(n*1,n); write (n)
 end 

What is the scope of m declared in the main program?

What does the following code do?

 var a, b : integer;
 begin
    a:=a+b;
    b:=a-b;
    a:=a-b
 end; 

The following Pascal program segments finds the largest number in a two-dimensional integer array A[0...n-1,0...n-1] using a single loop. Fill up the boxes to complete the program and write against in your answer book. Assume that max is a variable to store the largest value and i,j are the indices to the array.

 begin
     max:= , i:=0,j:=0;
     while  do
           begin
           if A[i,j]>max then max:=A[i,j]
           if  then j:=j+1
           else begin
                 j:=0;
                 i:= 
           end
     end
 end.

(a) What type of parameter passing mechanism (call-by-value, call-by-reference, call-by-name, or-by-value result) is the following sequence of actions truing to implement for a procedure call P(A[i]) where P(i:integer) is a procedure and A is an integer array?

 1. Create a new local variable, say z.
 2. Assign to z the value of A[i].
 3. Execute the body of P using z for A[i]
 4. Set A[i] to z. 

Is the implementation correct? Explain and correct it if necessary. You are supposed to make only small changes.

(b) Show the activation records and the display structure just after the procedures called at lines marked x and y have started their execution. Be sure to indicate which of the two procedures named A you are referring to.

 Program Test;
   Procedure A;
     Procedure B;
       Procedure A;
     ……
   end a;
 begin
   y:A;
   end B;
 begin
   B;
   end A;
 begin
   x:A;
 end Test. 

Consider the following PASCAL program segment:

 if i mode 2 = 0 then
           while i > = 0 do
             begin
              i:=i div 2;
              if i mod 2 < > 0 do then i:=i – 1
                   else i:=i – 2
 end

An appropriate loop-invariant for the while-loop is ______

Consider the following recursive definition of fib:

 fib (n) : = if n = 0 then 1
             else if n = 1 than 1
             else fib (n – 1) + fib (n – 2)

The number of times fib is called (including the first call) for an evaluation of fib (7) is ___________

Choose the correct alternatives (more than one may be correct) and write the corresponding letters only: Consider the following Pascal function:

 function X (M:integer) : integer;
 var i:integer;
 begin
   i = 0;
   while i*i < M do i; =i+1
   X;=i
 end

Give short answers to the following questions:
(i) Convert the following Pascal statement to a single assignment statement:

       if x > 5 they y:=true
             else y:=false; 

(a) Consider the following pseudo-code
(all data items are of type integer):

   Procedure P (a, b, c);
                 a:=2;
                 c:=a+b;
   end {P}
   begin
                 x:=1
                 y:=5;
                 z:=100;
                 P(x,x*y,z);
                 Write (‘x=’,x,z=’,z)
   end: 

(b) For the following pseudo-code, indicate the output, if
(i) static scope rules and (ii) dynamic scope rules are used

      Var, a, b : integer;
      Procedure P;
         a:=5; b:=10
      end {P};
      procedure Q;
      var a, b : integer;
      P;
      end {Q};
      begin
      a:=1; b:=2;
      Q;
      Write (‘a =’, a, ‘b=’,b)
      end. 

Match the pairs in the following questions:

(a) Small talk      (p) Logic programming
(b) LISP            (q) Data flow programming
(c) Prolog          (r) Functional programming
(d) VAL             (s) Object-oriented programming

In which of the following case(s) is it possible to obtain different results for call-by-reference and call-by-name parameter passing?

An unrestricted use of the "go to" statement is harmful because of which of the following reason(s):

Study the following program written in a block-structured language:

Var x, y:interger; 
procedure P(n:interger);
begin
     x:=(n+2)/(n-3);
end;

procedure Q 
Var x, y:interger;
begin   
    x:=3;
    y:=4; 
    P(y);
    Write(x)                                __(1)
end;
 
begin
    x:=7;
    y:=8;
    Q; 
Write(x);                                   __(2) 
end.

What will be printed by the write statements marked (1) and (2) in the program if the variables are statically scoped?

For the program given below what will be printed by the write statements marked (1) and (2) in the program if the variables are dynamically scoped?

Var x, y:interger; 
procedure P(n:interger);
begin
     x := (n+2)/(n-3);
end;

procedure Q 
Var x, y:interger;
begin   
    x:=3;
    y:=4; 
    P(y);
    Write(x);                                __(1)
end;
 
begin
    x:=7;
    y:=8;
    Q; 
    Write(x);                                __(2)
end.

Match the programming paradigms and languages given in the following table.

What is the output printed by the following C code?

# include 
int main ()
{
    char a [6] = "world";
    int i, j;
    for (i = 0, j = 5; i < j; a [i++] = a [j--]);
    printf ("%s\n", a);
}

Consider the C program below. What does it print?

# include 
# define swapl (a, b) tmp = a; a = b; b = tmp
void swap2 ( int a, int b)
{
        int tmp;
        tmp = a; a = b; b = tmp;
 }
void swap3 (int*a, int*b)
{
        int tmp;
        tmp = *a; *a = *b; *b = tmp;
}
int main ()
{
        int num1 = 5, num2 = 4, tmp;
        if (num1 < num2) {swap1 (num1, num2);}
        if (num1 < num2) {swap2 (num1 + 1, num2);} if (num1 >= num2) {swap3 (&num1, &num2);}
        printf ("%d, %d", num1, num2);
}

Consider the C program given below. What does it print?

#include 
int main ()
{
        int i, j;
        int a [8] = {1, 2, 3, 4, 5, 6, 7, 8};
        for(i = 0; i < 3; i++) { a[i] = a[i] + 1; i++; } i--; for (j = 7; j > 4; j--) {
              int i = j/2;
              a[i] = a[i] - 1;
        }
        printf ("%d, %d", i, a[i]);
}

C program is given below:

# include 
int main ()
{
        int i, j;
        char a [2] [3] = {{'a', 'b', 'c'}, {'d', 'e', 'f'}};
        char b [3] [2];
        char *p = *b;
        for (i = 0; i < 2; i++) {
              for (j = 0; j < 3; j++) {
              *(p + 2*j + i) = a [i] [j];
              }
        }
}

Consider the code fragment written in C below :

void f (int n)
{ 
  if (n <=1)  {
   printf ("%d", n);
  }
  else {
   f (n/2);
   printf ("%d", n%2);
  }
}

What does f(173) print?

Consider the code fragment written in C below :

void f (int n)
{
    if (n <= 1)  {
        printf ("%d", n);
    }
    else {
        f (n/2);
        printf ("%d", n%2);
    }
}

Which of the following implementations will produce the same output for f(173) as the above code?

P1
void f (int n)
{
    if (n/2)  {
        f(n/2);
    }
    printf ("%d", n%2);
}

P2 
void f (int n)
{
    if (n <=1)  {
        printf ("%d", n);
    }
    else {
        printf ("%d", n%2);
        f (n/2);
    }
}

The function f is defined as follows:

int f (int n) {
       if (n <= 1) return 1;
       else if (n % 2  ==  0) return f(n/2);
       else return f(3n - 1);
} 

Consider the C program given below:

#include 
int main ()    {
    int sum = 0, maxsum = 0,  i,  n = 6;
    int a [] = {2, -2, -1, 3, 4, 2};
    for (i = 0; i < n; i++)    {
            if (i == 0 || a [i]  < 0  || a [i] < a [i - 1])  {
                     if (sum > maxsum) maxsum = sum;
                     sum = (a [i] > 0) ? a [i] : 0;
            }
            else sum += a [i];
    }
    if (sum > maxsum) maxsum = sum ;
    printf ("%dn", maxsum);

} 

What is the value printed out when this program is executed?

Consider the program below in a hypothetical language which allows global variable and a choice of call by reference or call by value methods of parameter passing.

int i ;
program main ()
{
    int j = 60;
    i = 50;
    call f(i,j);
    print i, j;
}
procedure f(x,y)
{           
    i = 100;
    x = 10;
    y = y + i ;
} 

Consider the program below in a hypothetical programming language which allows global variables and a choice of static or dynamic scoping.

int i ;
program main ()
{
    i = 10;
    call f();
}

procedure f()
{   
    int i = 20;
    call g ();
}
procedure g ()
{   
    print i;
} 

Early binding refers to a binding performed at compile time and late binding refers to a binding performed at execution time. Consider the following statements:
i. Static scope facilitates w1 bindings.
ii. Dynamic scope requires w2 bindings.
iii. Early bindings w3 execution efficiency.
iv. Late bindings w4 execution efficiency.
The right choices of wl, w2, w3 and w4 (in that order) are

Which one of the choices given below would be printed when the following program is executed?

#include 
struct test {
               int i;
               char *c;
}st[] = {5, "become", 4, "better", 6, "jungle", 8, "ancestor", 7, "brother"};
main ()
{ 
    struct test *p = st;
    p += 1;
    ++p -> c;
    printf("%s,", p++ -> c);
    printf("%c,", *++p -> c);
    printf("%d,", p[0].i);
    printf("%s n", p -> c);
}

#include 
void swap (int *x, int *y)
{
    static int *temp;
    temp = x;
    x = y;
    y = temp;
}
void printab ()
{
    static int i, a = -3, b = -6;
    i = 0;
    while (i <= 4)
    {
        if ((i++)%2 == 1) continue;
        a = a + i;
        b = b + i;
    }
    swap (&a, &b);
    printf("a =  %d, b = %d\n", a, b);
}
main()
{
    printab();
    printab();
}

Which one of the choices given below would be printed when the following program is executed?

#include 
int a1[] = {6, 7, 8, 18, 34, 67};
int a2[] = {23, 56, 28, 29};
int a3[] = {-12, 27, -31};
int *x[] = {a1, a2, a3};
void print(int *a[])
{
            printf("%d,", a[0][2]);
            printf("%d,", *a[2]);
            printf("%d,", *++a[0]);
            printf("%d,", *(++a)[0]);
            printf("%d/n", a[-1][+1]);
}
main()
{
             print(x);
}

The following function computes the value of ^mC_n correctly for all legal values m and n (m≥1,n≥0 and m>n)

 int func(int m, int n)
{
    if (E) return 1;
    else return(func(m - 1, n) + func(m - 1, n - 1));
}

In the above function, which of the following is the correct expression for E?

Match the following concepts and their best possible descriptions.

Concept:
(i) overloading
(ii) friend
(iii) constructor
(iv) protected
(v) this
(vi) inheritance
Descriptions:
A. allows to define a class to have a properties of another class
B. defining a set of similar functions
C. used in dereferncing
D. used to given a non - member function access to the private parts of body
E. a function which is automatically called when object is created
F. allows a derived class to have access to the private parts of the base
G. a pointer to the object associated with the current functions
H. used to obtain persistence

The following C function takes two ASCII strings and determines whether one is an anagram of the other. An anagram of a string s is a string obtained by permuting the letters in s.

int anagram (char *a, char *b) {
     int count [128], j;
     for (j = 0;  j < 128; j++) count[j] = 0;
     j = 0;
     while (a[j] && b[j]) {
       A;
       B;
}
for (j = 0; j < 128; j++) if (count [j]) return 0;
return 1;
} 

Choose the correct alternative for statements A and B.

The following C function takes a singly-linked list of integers as a parameter and rearranges the elements of the list. The list is represented as pointer to a structure. The function is called with the list containing the integers 1, 2, 3, 4, 5, 6, 7 in the given order. What will be the contents of the list after the function completes execution?

struct node {
    int value; 
    struct node *next;
);
void rearrange (struct node *list) 
{
    struct node *p, *q;
    int temp;
    if (!list || !list -> next) 
        return;
    p = list; 
    q = list -> next;
    while (q) 
    {
        temp = p -> value;
        p -> value = q -> value;
        q -> value = temp;
        p = q -> next;
        q = p ? p -> next : 0;
    }
} 

What is the output printed by the following program?

#include
int f(int n, int k)
{
    if (n == 0)
        return 0;
    else if (n % 2)
        return f(n/2, 2*k) + k;
    else return f(n/2, 2*k) - k;
}
int main ()
{
    printf("%d", f(20, 1));
    return 0;
}

Let a be an array containing n integers in increasing order. The following algorithm determines whether there are two distinct numbers in the array whose difference is a specified number S > 0.

i = 0;
j = 1;
while (j < n )
{
    if (E) j++;
    else if (a[j] - a[i] == S) break;
    else i++;
}
if (j < n)
    printf("yes")
else
   printf ("no"); 

Choose the correct expression for E.

Let a and b be two sorted arrays containing n integers each, in non-decreasing order. Let c be a sorted array containing 2n integers obtained by merging the two arrays a and b. Assuming the arrays are indexed starting from 0, consider the following four statements

1. a[i] ≥ b [i] => c[2i] ≥ a [i]
2. a[i] ≥ b [i] => c[2i] ≥ b [i]
3. a[i] ≥ b [i] => c[2i] ≤ a [i]
4. a[i] ≥ b [i] => c[2i] ≤ b [i] 

Let x be an integer which can take a value of 0 or 1. The statement if(x = =0) x = 1; else x = 0; is equivalent to which one of the following?

A program attempts to generate as many permutations as possible of the string, 'abcd' by pushing the characters a, b, c, d in the same order onto a stack, but it may pop off the top character at any time. Which one of the following strings CANNOT be generated using this program?

What is the output of the following program?

#include <stdio.h>
int funcf (int x);
int funcg (int y);

main()
{
    int x = 5, y = 10, count;
    for (count = 1; count <= 2; ++count)
    {
        y += funcf(x) + funcg(x);
        printf ("%d ", y);
    }
}

funcf(int x)
{
    int y;
    y = funcg(x);
    return (y);
}

funcg(int x)
{
    static int y = 10;
    y += 1;
    return (y+x);
}

Consider the following C program which is supposed to compute the transpose of a given 4 x 4 matrix M. Note that, there is an X in the program which indicates some missing statements. Choose the correct option to replace X in the program.

#include<stdio.h>
#define ROW 4
#define COL 4
int M[ROW][COL] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
main()
{
    int i, j, t;
    for (i = 0; i < 4; ++i)
    {
        X
    }
    for (1 = 0; i < 4; ++i)
        for (j = 0; j < 4; ++j)
            printf ("%d", M[i][j]);
}

Choose the correct option to fill the ?1 and ?2 so that the program prints an input string in reverse order. Assume that the input string is terminated by a new line character.

#include 
void wrt_it (void);
int main (void)
{
    printf("Enter Text"); 
    printf ("n");
    wrt_ it();
    printf ("n");
    return 0;
}
void wrt_it (void)
{
    int c;
    if (?1)
        wrt_it();
    ?2
} 

Consider the following C program:

#include <stdio.h>
typedef struct 
{
    char *a;
    char *b;
} t;
void f1(t s);
void f2(t *p);
main()
{
    static t s = {"A", "B"};
    printf ("%s %sn", s.a, s.b);
    f1(s);
    printf ("%s %sn", s.a, s.b);
    f2(&s);
}
void f1(t s)
{
    s.a = "U";
    s.b = "V";
    printf ("%s %sn", s.a, s.b);
    return;
}
void f2(t *p)
{
    p -> a  = "V";
    p -> b = "W";
    printf("%s %sn", p -> a, p -> b);
    return;
}