GATE | GATE CS Mock 2018 | Set 2 | Question 53

Consider the following C – code :

filter_none

edit
close

play_arrow

link
brightness_4
code

#include "stdio.h"
  
int foo(int a)
{
 printf("%d",a);
 return 0;
}
  
int main()
{
 foo;
 return 0;
}

chevron_right


Which of the following option is correct?
(A) It’ll result in compile error because foo is used without parentheses.
(B) No compile error and some garbage value would be passed to foo function. This would make foo to be executed with output “garbage integer”.
(C) No compile error but foo function wouldn’t be executed. The program wouldn’t print anything.
(D) No compile error and ZERO (i.e. 0) would be passed to foo function. This would make foo to be executed with output 0.


Answer: (C)

Explanation: In C, if a function name is used without parentheses, the reference to the function name simply generates a pointer to the function, which is then discarded. So the above program would compile but won’t print anything.

Quiz of this Question



My Personal Notes arrow_drop_up


Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.