C | Functions | Question 5
Output?
#include <stdio.h> int main() { int (*ptr)(int ) = fun; (*ptr)(3); return 0; } int fun(int n) { for(;n > 0; n--) printf("GeeksQuiz "); return 0; } |
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(A) GeeksQuiz GeeksQuiz GeeksQuiz
(B) GeeksQuiz GeeksQuiz
(C) Compiler Error
(D) Runtime Error
Answer: (C)
Explanation: The only problem with program is fun is not declared/defined before it is assigned to ptr. The following program works fine and prints “GeeksQuiz GeeksQuiz GeeksQuiz ”
int fun(int n);
int main()
{
// ptr is a pointer to function fun()
int (*ptr)(int ) = fun;
// fun() called using pointer
(*ptr)(3);
return 0;
}
int fun(int n)
{
for(;n > 0; n--)
printf("GeeksQuiz ");
}
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