coordinate_--_8.cpp

#include <iostream>
using namespace std;

class coordinate
    {
        private:
            int x,y,z;
        public:
            void set()
                {
                    cout<<"Enter x:"<<endl;
                    cin>>x;
                    cout<<"Enter y:"<<endl;
                    cin>>y;
                    cout<<"Enter z:"<<endl;
                    cin>>z;
                }
            void print()
                {
                    cout<<"x:"<<x<<endl;
                    cout<<"y:"<<y<<endl;
                    cout<<"z:"<<z<<endl;
                }
            void operator -- (int) 
                {
                    x--;
                    y--;
                    z--;
                }
    };

int main() {
	// your code goes here
	coordinate c;
	c.set();
	c--;
	c.print();
	return 0;
}

==================output================
Enter x:1
Enter y:2
Enter z:3
x:0
y:1
z:2