switch语句:在swift中从if语句转换为switch语句

Question

我正试图从下面的if语句转换为switch语句，但我一直收到错误。

let meal = "breakfast"
if meal == "breakfast" {
print("Good morning!")
} else if meal == "lunch" {
print("Good afternoon!")
} else if meal == "dinner" {
print("Good evening!")
} else {
print("Hello!")
} 

这是我的转换声明：

switch meal {
let meal = "breakfast"
case 1: 
print("Good morning!”)
case 2: 
print("Good afternoon!")
case 3: 
print("Good evening!")
}

Answer 1

let meal = "breakfast"
switch meal {
case "breakfast":
print("Good morning")
case "lunch":
print("Good afternoon!")
case "dinner":
print("Good evening!")
default:
print("default case")
}

把这个开关块放在你的代码中：(