Computer-Networks
December 1, 2023Question 8878 – ISRO CS 2020
December 1, 2023Programming-for-Output-Problems
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Question 19
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What will be the output of following?
main()
{
static int a=3;
printf(“%d”,a–);
if(a)
main();
}
main()
{
static int a=3;
printf(“%d”,a–);
if(a)
main();
}
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3
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3 2 1
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3 3 3
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Program will fall in continuous loop and print 3
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Question 19 Explanation:
Step-1: initial a=3 but we are given storage class is static.
Step-2: In printf( ) we are given post decrement. So, it will print 3 then decrements.
Step-3: if(2) then we are calling main() function, a=2 because of static otherwise it will be 3 only.
Step-4: It will print 2 and next iteration will print 1.
Step-2: In printf( ) we are given post decrement. So, it will print 3 then decrements.
Step-3: if(2) then we are calling main() function, a=2 because of static otherwise it will be 3 only.
Step-4: It will print 2 and next iteration will print 1.
Correct Answer: B
Question 19 Explanation:
Step-1: initial a=3 but we are given storage class is static.
Step-2: In printf( ) we are given post decrement. So, it will print 3 then decrements.
Step-3: if(2) then we are calling main() function, a=2 because of static otherwise it will be 3 only.
Step-4: It will print 2 and next iteration will print 1.
Step-2: In printf( ) we are given post decrement. So, it will print 3 then decrements.
Step-3: if(2) then we are calling main() function, a=2 because of static otherwise it will be 3 only.
Step-4: It will print 2 and next iteration will print 1.
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