#include<iostream>
using namespace std;

class point
{
    public:
        point()
        {
            cout<<this<<endl;
            cout<<this+1<<endl;
            cout<<this-5<<endl;
        }
}
 int main()
{
    point a;
    cout<<&a<<endl;
    return 0;
}

类最后面没有打分号；类名首字最好大写。