#include <iostream>
using namespace std;

class Number
{
private:
    int num;
    
    // this is a constructor - it's executed as soon as the class is created.
    Number ()
    {
        num = 0;
    }
    
    // this is a destructor - it's executed when the class is destroyed.
    ~Number ()
    {
    }
    
public:
    int getNum ()
    {
        return num;
    }
    
    void setNum (int newNum)
    {
        num = newNum;
    }
    
    void printNum ()
    {
        cout << num << endl;
    }
    
    void incrementNum ()
    {
        num++;
    }
}

int main ()
{
    Number num; // this creates a new instance of the class called "num"
    
    while (num.getNum() <= 10)
    {
        num.incrementNum();
        num.printNum();
    }
    
    return 0;
}