C++ Classes

Classes also have same syntax as structures but the difference is that in a class the members are private by default, while in a structure the are public by default.

A Simple Class

Here is the 1st program related to the classes that contain a class and two objects of that class.

Copy this program and run in your compiler and understand it.

#include<iostream.h>    //if you are using C then use <stdio.h>

class student                //class student

{

private:

    int roll;

public:

   void setdata(int r)      //member function to setdata

{roll=r;}

void showdata();         //member function to display data

{cout<<roll no. is= "<<roll<<endl;}     //use printf(""); in C instead of cout<<;

};

void main()\

{

clrscr();

student s1,s2;       //define two objects of class student

s1.setdata(9);      //call member function to set data 

s2.setdata(10);

s1.showdata();   //call member function to display data

s2.showdata();

getch();

}