Swift 嵌套的if-else语句

Swift语言允许您在if-else语句内部使用if-else语句。在Swift中，嵌套的if-else语句也可以用于switch语句。

示例

let n1 = 10, n2 = 22, n3 = 25
if n1 >= n2 {
    if n1 >= n3 {
        print("The largest number is ", n1)
    }
    else {
        print("The largest number is ", n3)
    }
}
else {
    if n2 >= n3 {
        print("The largest number is ",  n2)
    }
    else {
        print("The largest number is ", n3)
    }
}

输出：

The largest number is 25