switch(channel)
{
    case 4 ... 7:     
        printf("VHF Station\n"); break;
    case 9 ... 12:
        printf("VHF Station\n"); break;
    case 3: case 8: case 13:     
        printf("Weak Signal\n"); break;
    case 14 ... 69:
        printf("UHF Station\n"); break;
    default:
        printf("No Signal Available\n");
}