F# - if/elif/else 语句
if/then/elif/else 构造具有多个 else 分支。
语法
F# 编程语言中 if/then/elif/else 语句的语法为 −
if expr then expr elif expr then expr elif expr then expr ... else expr
示例
let a : int32 = 100 (* check the boolean condition using if statement *) if (a = 10) then printfn "Value of a is 10\n" elif (a = 20) then printfn " Value of a is 20\n" elif (a = 30) then printfn " Value of a is 30\n" else printfn " None of the values are matching\n" printfn "Value of a is: %d" a
当您编译并执行该程序时,它会产生以下输出 −
None of the values are matching Value of a is: 100