带结果的 switch

//switch expression analog: a function
//with a C switch; grouped cases play
//the role of ranges
NSString *describeSize(int inchSize) {
    switch (inchSize) {
        case 14: case 15:
            return @"too small";
        case 16: case 17: case 18:
            return @"good for the past decade";
        case 19: case 20: case 21:
        case 22: case 23:
            return @"for office work";
        case 24: case 25: case 26: case 27:
            return @"great choice";
        default:
            return @"are you sure this isn't a TV?";
    }
}

NSString *str = describeSize(24);
//str is "great choice"