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ISRO-2007
January 21, 2024
Question 9016 – GATE 2010
January 21, 2024
ISRO-2007
January 21, 2024
Question 9016 – GATE 2010
January 21, 2024

Programming

Question 49
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:

A
1, because m is a local variable in P
B
0, because m is the actual parameter that corresponds to the formal parameter in p
C
0, because both x and y are just reference to m, and y has the value 0
D
1, because both x and y are just references to m which gets modified in procedure P
E
none of the above
Question 49 Explanation: 
0, because global m is not modified, m is just passed to formal argument of P.
Correct Answer: B
Question 49 Explanation: 
0, because global m is not modified, m is just passed to formal argument of P.

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