Objective-C 具有多个参数的 switch case

Objective-C 是一种面向对象的编程语言，它在 iOS 和 macOS 开发中广泛使用。在 Objective-C 中，我们经常使用 switch case 语句来处理多个不同的情况。而在某些情况下，我们可能需要在 switch case 中使用多个参数。本文将介绍如何在 Objective-C 中实现具有多个参数的 switch case，并提供相应的案例代码。

objective-c
int number = 2;
switch (number) {
    case 1:
        NSLog(@"Number is 1");
        break;
    case 2:
        NSLog(@"Number is 2");
        break;
    case 3:
        NSLog(@"Number is 3");
        break;
    default:
        NSLog(@"Number is not 1, 2, or 3");
        break;
}

objective-c
int number1 = 2;
int number2 = 3;
int combinedNumber = number1 * 10 + number2;
switch (combinedNumber) {
    case 12:
        NSLog(@"Combined number is 12");
        break;
    case 23:
        NSLog(@"Combined number is 23");
        break;
    case 34:
        NSLog(@"Combined number is 34");
        break;
    default:
        NSLog(@"Combined number is not 12, 23, or 34");
        break;
}

objective-c
NSString *gender = @"female";
int age = 30;
int combinedInfo = 0;
if ([gender isEqualToString:@"male"]) {
    combinedInfo += 1;
}
if (age >= 18 && age <= 30) {
    combinedInfo += 10;
} else if (age > 30 && age <= 50) {
    combinedInfo += 20;
} else if (age > 50) {
    combinedInfo += 30;
}
switch (combinedInfo) {
    case 11:
        NSLog(@"You are a young male");
        break;
    case 21:
        NSLog(@"You are a middle-aged male");
        break;
    case 31:
        NSLog(@"You are an old male");
        break;
    case 10:
        NSLog(@"You are a young female");
        break;
    case 20:
        NSLog(@"You are a middle-aged female");
        break;
    case 30:
        NSLog(@"You are an old female");
        break;
    default:
        NSLog(@"Invalid input");
        break;
}