C++ and visual studio 2017: error c4430 [duplicate] - c++

Question

This question already has answers here:
Why does stdafx.h work the way it does?
(4 answers)
Closed 5 years ago.
I'm facing a really stupid and infuriating problem, I was following a video on how to make a roguelike, I decided to stop after knowing how to print a level to the screen and actually start coding, then I got multiple errors on seamingly perfect code, I blammed the constructors so I decided to make a new project on visual studio to test the most stupid case, one main fuction, one clase with one constructor that does nothing, and I leaved all the work of making the class and the constructor to visual studio, I still got the goddammned issue, here's the error on that simplified version of the code, I would show the rogue like code but I would have to translate to english al the errors myself, and most of them have nothing to do with the actual error, because mostly they're complaining about missing ; in places where either there shouldn't be a ; or there alredy is one.
here's the code
main.cpp:
#include "stdafx.h"
int main()
{
return 0;
}
test.h
#include "stdafx.h"
class test
{
public:
test();
};
test.cpp
#include "test.h"
#include "stdafx.h"
test::test(){
}
yet with that simple auto-generated code, visual studio still complaints and gives me this error messages
c4430 missing type specifier - int assumed. Note: C++ does not support default-int
c2653 'test' : is not a class or namespace name
'test' : function should return a value; 'void' return type assumed
what should I do?

Answer 1

You have to define return type explicitly and return a value of that type if your function returns not void. Otherwise you will get that error.
class A
{
int int_func();
void void_func();
};
int A::int_func()
{
return 0;
}
void A::void_func()
{
// No return;
}