C - Function Call

Here's a way on how to call function like the most avaiable in many software, like PHP, Apache or other software that built by C:

#define PO_FUNC(bar) bar()

What that means is that whenever you want to call a function, you do it by
PO_FUNC(your_function_name)

Here's an example:

#include <stdio.h>

#define PO_FUNC(bar) bar()

void hello(){

    printf("Hello For All");

}

int main(int argc, char* argv[]){

    PO_FUNC(hello);    // This is the same case as hello()

    return 0;

}

C - Function Call