#include <iostream>
using namespace std;
class numbers
{
    public:
    int x,y;
    void getdata()
    {
        cout<<"Enter the two numbers to add:";
        cin>>x>>y;
    }
};
class add:public numbers
{
    public:
    int z;
    void calc()
    {
    z=x+y;
    cout<<"\nThe Addition of two numbers is:"<<z;
    }
};
class sub:public add
{
    int w;
    public:
    void subtract()
    {
        cout<<"\nEnter a number to subtact:";
        cin>>w;
    }
    void process()
    {
        cout<<"\nThe Subtraction is "<<z-w;
    }
};
int main()
{
    sub s;
    s.getdata();
    s.calc();
    s.subtract();
    s.process();
}