Program to illustrate the overloading

	// Program to illustrate the overloading of
	// operators ++ and -- (both prefix and postfix)

	#include<stdio.h>
	#include<conio.h>
	#include<iostream.h>

	class number
	{
		private:
			int x,y;
		public:
			number()
			{
				x=y=0;
			}

			number(int a,int b)
			{
				x=a;
				y=b;
			}

			number operator++() // Prefix Increment Operator
			{
				return number(++x,++y);
			}

			number operator++(int) // Postfix Increment Operator
			{
				return number(x++,y++);
			}

			number operator--() // Prefix Decrement Operator
			{
				return number(--x,--y);
			}

			number operator--(int) // Postfix Decrement Operator
			{
				return number(x--,y--);
			}

			void show()
			{
				cout<<" x = "<<x<<"  "<<"y = "<<y<<endl;
			}
	};

	void main()
	{
		clrscr();
		number n1,n2(5,33);

		cout<<endl<<"Initialization"<<endl;
		cout<<"n1";
		n1.show();
		cout<<"n2";
		n2.show();

		n1=n2++;
		cout<<endl<<"n1=n2++ "<<endl;
		cout<<"n1";
		n1.show();
		cout<<"n2";
		n2.show();

		n1=n2--;
		cout<<endl<<"n1=n2-- "<<endl;
		cout<<"n1";
		n1.show();
		cout<<"n2";
		n2.show();

		n1=++n2;
		cout<<endl<<"n1=++n2 "<<endl;
		cout<<"n1";
		n1.show();
		cout<<"n2";
		n2.show();

		n1=--n2;
		cout<<endl<<"n1=--n2 "<<endl;
		cout<<"n1";
		n1.show();
		cout<<"n2";
		n2.show();

		getch();
	}

	/* OUTPUT

	Initialization
	n1 x = 0  y = 0
	n2 x = 5  y = 33

	n1=n2++
	n1 x = 5  y = 33
	n2 x = 6  y = 34

	n1=n2--
	n1 x = 6  y = 34
	n2 x = 5  y = 33

	n1=++n2
	n1 x = 6  y = 34
	n2 x = 6  y = 34

	n1=--n2
	n1 x = 5  y = 33
	n2 x = 5  y = 33

	*/