#include <iostream>

using namespace std;

class Int{
public:
    int value;

    Int(int in = 0): value(in){}
    const Int plus(Int& i){return Int(this->value + i.value);}
    void print(){cout << value << endl;}
};

int main(){

    Int i(2); //cannot say Int i();
    Int j(5);
    Int k;
    k = i.plus(j);
    i.print();
    j.print();
    k.print();
    return 0;
}