class shape C++

#include<iostream>
#include<conio.h>
using namespace std;
class shape
{
	private : int len,br,h;
	public : void read();
			 void display();
			 void operator++();
};
void shape :: read()
{
	cout<<"Enter value for length breadth height:\n";
	cin>>len>>br>>h;
}
void shape :: operator++()
{
	len++;
	br++;
	h++;
}
void shape :: display()
{
	cout<<"Length= "<<len<<"\nBreadth= "<<br<<"\nHeight= "<<h;
}
int main()
{
	shape s1;
	s1.read();
	s1.display();
	cout<<"\nAfter Incrementing:\n---------------\n";
	++s1;
	s1.display();
	getch();
	return 0;
}