#include <iostream>
#include <stdlib.h>

template <class T>

class Operation
{
private:
    T x, y;

public:
    Operation(T a, T b)
    {
        x = a;
        y = b;
    }
    T add();
    T sub();
};

template <class T>
T Operation<T>::add()
{
    return x + y;
}

template <class T>
T Operation<T>::sub()
{
    return x - y;
}

int main()
{
    Operation<int> opt_int(1, 2);
    std::cout << opt_int.add() << "   " << opt_int.sub() << std::endl;
    Operation<double> opt_double(1.4, 2.7);
    std::cout << opt_double.add() << "   " << opt_double.sub() << std::endl;
    system("pause");
    return 0;
}