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

class unary
{
	float num;

	public:
	void accept()
	{
		cout<<"\nEnter number: ";
		cin>>num;
	}
	
	void display()
	{
		cout<<"Number= "<<num<<endl;
	}
	
	unary operator--()
	{
		num=num-1;
	}
};

void main()
{
	clrscr();
	unary u;
	u.accept();
	u--;
	cout<<"\nAfter unary operation ";
	u.display();
	getch();
}