Addition of 2 Integers using classes

Today i am going to introduce the uses classes and their implementation respectively.
first of all classes are almost like structure of C but classes not as exactly same
here a few difference that it is a set object that shares similar property.

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

class add
{
int a,b,c;
public:
void read()
{
cout<<"Enter 2 Integers:-"<<endl;
cin>>a>>b;
}
void sum()
{
c=a+b;
}
void display()
{
cout<<"Sum of 2 Integer:- "<<c;
}
};

void main()
{
add x;
clrscr();
x.read();
x.sum();
x.display();
getch();
}