FRIEND FUNCTION

	//FRIEND FUNCTION
	#include<iostream>
	#include<conio.h>
	using namespace std;
	class rect
	{
	int length;
	public:
	rect(int c)
	{
	length=c;
	}
	friend void display(rect);
	};
	void display(rect d)
	{
	int x;
	x=d.length+10;
	cout<<"length\t"<<x;
	}
	int main()
	{
	rect a(5);
	display(a);
	getch();
	return 0;
	}

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