Find the greatest of two numbers

//pgm to find the greatest of two numbers
#include<iostream.h>
#include<conio.h>
void main()
{
    int a,b;
    clrscr();
    cout<<"enter the first number";
    cin>>a;
    cout<<"enter the second number";
    cin>>b;
    if(a>b)
        cout<<a<<"is greater";
    else
        cout<<b<<"is greater";
     getch();
}