Write a running C code without main()

Write a C code that prints “Hello C” without any main function. This is a trick question and can be solved in following ways.

1) Using a macro that defines main

#include<stdio.h> #define fun main int fun(void) {     printf("Hello C");     return 0; }

Output:

Hello C

2) Using Token-Pasting Operator
The above solution has word ‘main’ in it. If we are not allowed to even write main, we ca use token-pasting operator (see this for details)

#include<stdio.h> #define fun m##a##i##n int fun() {     printf("Hello C");     return 0; }

Output:

Hello C