Can You Write a C Program Without a Main Function ?

Question

Have you ever wondered how to write a C program without a main function? Can a C program execute without a main function? Is it possible to do that?

Answer 1

#include<stdio.h>
#define decode(s,t,u,m,p,e,d)m##s##u##t
#define begin decode(a,n,i,m,a,t,e)

int begin()
{
printf("hai");
return 0;
}

output: hai

Answer 2

No. Main function is a must in C Program.

But still you can do some tricks using define to avoid it 😉
#include <stdio.h>
#define xyz main

void xyz(){
...
}

But still main is always somewhere. 👍😁