first lab class object oriented programming with c++

// first lab class object oriented programming with c++ .                                md.jahangir alam (polas)
// write a program to display student information :roll,name,dept                 date:17/1/2011
#include<iostream.h>
#include<conio.h>
    class diu{
        int roll;
        char name[30];
        char dept[20];
        public:
     void getinput();
     void display();
    };

 void diu::getinput(){
        cin>>roll>>name>>dept;
    }
    void diu::display(){
        cout<<name<<endl<<roll<<endl<<dept;
    }
void main(){
        clrscr();
        diu cse;
        cse.getinput();
        cse.display();
        getch();
    }