details of a student C++

/*program to read and display details of a student*/
#include<iostream.h>
#include<conio.h>

class student             //class declaration
{
	private : int rollno;
			  char name[20];
			  float m1,m2,m3;
	public : void display();
			 void read();
};
void student :: read()    //definition of member function outside class
{
	cout<<"Enter Name of Student: ";
	cin>>name;
	cout<<"Enter Roll number: ";
	cin>>rollno;
	cout<<"Enter Mark Of Subject 1: ";
	cin>>m1;
	cout<<"Enter Mark of Subject 2: ";
	cin>>m2;
	cout<<"Enter Mark of subject 3: ";
	cin>>m3;
}
void student :: display()
{
	cout<<name;
	cout<<rollno;
	cout<<"Mark 1: "<<m1;
	cout<<"Mark 2: "<<m2;
	cout<<"Mark 3: "<<m3;
}
int main()          //main function
{
	student obj1;
	obj1.read();
	obj1.display();
	getch();
	return 0;
}