c++ prac prog - 14

void main()
{
    clrscr();
    char c;
    int nof,grace(0);
    cout << "Enter your class(f - first/s - second/t - third): ";
    cin >> c;
    cout << endl << "\nEnter the number of failed subjects: ";
    cin >> nof;
    switch(c)
    {
        case 'f':
            grace = nof>3?0:3;
            break;
        case 's':
            grace = nof>2?0:4;
            break;
        case 't':
            grace = nof!=1?0:5;
            break;
    }
    if(grace==0)
        cout << endl << "\nYou are not eligible for grace marks.\n";
    else
        cout << endl << "\nYou get " << grace << " marks per subject as grace.\n";
    getch();
}