/**
if 语句的多分支执行
*/
let score:Double = 98.5
var res:String = ""
if score >= 90 {
res = "优秀"
} else if score >= 80 {
res = "良好"
} else if score >= 60 {
res = "及格"
} else if score >= 0 {
res = "不及格"
}
if score >= 90 {
res = "优秀"
} else {
if score >= 80 {
res = "良好"
} else {
if score >= 60 {
res = "及格"
}
else {
// if <#condition#> {
// <#code#>
// }
}
}
}
print(res)
原文链接：https://www.f2er.com/swift/322476.html