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Question

What is the output of this C code? 
#include <stdio.h>
    #include <stdarg.h>
    int f(...);
    int main()
    {
        char c = 97;
        f(c);
        return 0;
    }
    int f(...)
    {
        va_list li;
        char c = va_arg(li, char);
        printf("%c\n", c);
    }

a.

Compile time error

b.

Undefined behaviour

c.

97

d.

a

Posted under C Programming

Answer: (a).Compile time error

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Q. What is the output of this C code?
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