Why can't a function go after Main

Question

Why can\'t I put a function after main, visual studio cannot build the program. Is this a C++ quirk or a Visual Studio quirk?

eg.

int main()
{
   myF         


        

Answer 1

You can, but you have to declare it beforehand:

void myFunction(); // declaration

int main()
{
   myFunction();
}

void myFunction(){} // definition

Note that a function needs a return type. If the function does not return anything, that type must be void.