Well your first problem is your ‘main’ method
int main()
{
int getFirstInteger(int userInput)
return 0;
}
The syntax is incorrect (should be lined ended with a semi-colon). And you should be passing an int. So it could be modified to this
int main()
{
int j = 1;
getFirstInteger(j)
return 0;
}
But it’s worth looking at the implementation here. You’re getting the user input within that method, so no need to pass in anything. And you’re not using the output, so no need to return anything.
Also you’ve double included #include<iostream>
This won’t be a big issue in a small program but it’s a waste and bad practice. Only include this where it’s needed (which is in CalculationsFunctions.cpp). Don’t think you need #include "stdafx.h"
at all.