Classes

Question

Hello gang,

I'm currently trying to understand classes better and have started doing some basic excersizes. I have a problem with this simple class and I would really appriciate some help. The code:

#include <iostream>
#include <string>

using namespace std;

class Addition{
public:
int x,y;
int sum;
int add(){sum = x + y;}
};

int main(){

Addition work;
cout<< "Enter your first number: ";
cin>> work.x;
cout<< "Enter your second number: ";
cin>> work.y;
cout<< work.add();

return 0;
}

From my point of view this is how I understand OOP, but the compiler just outputs a random number and doesn't do what i want it to do. Basically it should add 2 integers, where the addition process is being called from the class. Any suggestions?
I have even tried to just write:

#include <iostream>
#include <string>

using namespace std;

class Addition{
public:
int x,y;
int add(x+y);
};

int main(){

Addition work;
cout<< "Enter your first number: ";
cin>> work.x;
cout<< "Enter your second number: ";
cin>> work.y;
cout<< work.add();

return 0;
}

Doesn't seem to work either.

Answer 1

In your first version, change

sum = x+y;

to

return x+y;.

Answer 2

thank you!