#include <iostream>

using namespace std;

template <class T>
class eben{
private:
    T a;
    T b;
public:
    eben(T &_a, T &_b) : a(_a), b(_b)
    {}
    void addnum();
    void substract();
    void divide();
};

template <class T>
void eben<T>::addnum(/*T &a, T &b*/)
{
    T sonuc;
    sonuc=a+b;
    cout<<sonuc<<endl;
}
template <class T>
void eben<T>::substract(/*T &a, T &b*/)
{
    T sonuc;
    sonuc=a-b;
    cout<<sonuc<<endl;
}
template <class T>
void eben<T>::divide(/*T &a, T &b*/)
{
    T sonuc;
    sonuc=a/b;
    cout<<sonuc<<endl;
}

int main()
{
    eben<int> obj;
    obj.eben(20,4);



    return 0;
}