c++ prac prog - 11

void main()
{
    int a,b,noy;
    clrscr();
    cout << "Enter the organisation joining year : ";
    cin >> a;
    cout << endl << "\nEnter the current year : ";
    cin >> b;
    noy = b - a;
    if(noy>3)
        cout << "\n\nYou are eligible for a Rs.2500 bonus." << endl;
    getch();
}