What is the correct way to declare a function with no Input?

[Ben Hutchinson]

So I Want to have a function that gives an output but has no input. Which is the correct code?

double __stdcall GetSomeNumber(){
 return SomeValue;
}

or this

double __stdcall GetSomeNumber(void){
 return SomeValue;
}

Does they keyword "void" need to be used in the function definition if there's no input? Or can I leave the input parameter area of the function definition completely empty?

[N1Co216C]

"void" only needs to be used in the header of your function if your function wont return anything. Since your function has a return statement, you would not use "void". As for a function without an input, your only option I believe is to write a 'cout' statement within the function displaying what your want the function to put out.

[MiiNiPaa]

Both are correct. void in argumnet list is a C leftover which does exactly nothing in C++