can't we use void main instead of int main in programs

Question

#include <iostream>
using namespace std;

int main()
{
cout << "Hello world!";
return 0;
}

Answer 1

In C++ NO, but C YES/NO (Don't take my word for it and study the following links)!

[https://stackoverflow.com/questions/449851/why-do-we-need-to-use-int-main-and-not-void-main-in-c]
[https://stackoverflow.com/questions/204476/what-should-main-return-in-c-and-c]