Swift语法介绍: 判断
if/else判断
//简单判断
let isSuccess = true
if isSuccess {
print("success!")
}else {
print("failue!")
}
//多条件判断
let i = 100
let j = 200
if i>=100 && j>=200 {
print("YES!")
}else {
print("NO!")
}
运行结果:
switch判断
let sex = "Male"
switch sex {
case "Male":
print("He is a boy")
break
case "Female":
print("She is a girl")
break
default:
print("unknown")
break
}
运行结果:
代码下载
https://github.com/99ios/SwiftBasic