can i use Twinkle() instead of main()?

Answer 1

#include<iostream>
using namespace std;

#define Twinkle main

int Twinkle() {

   cout<<"Hello";

   return 0;

}

run this code in g++ compiler

Answer 2

Touché.

That's still main() once your code is compiled though.

Answer 3

but i can write twinkle()

Answer 4

No, the function that your program execute first is always main(). You can have a Twinkle() function however.

Answer 5

You shall have a main function for a valid program but you can avoid its direct use by preprocessor macros.