if/then/elif/else构造具有多个else分支。 语法(Syntax) F#编程语言中if/then/elif/else语句的语法是 - if expr then expr elif expr then expr elif expr then expr ... else expr 例子(Example) let a : int32 = 100 (* check the boolean condition using if statement *) if (a = 10) then pri...
if-then语句后面可以跟一个可选的else语句,该语句在布尔表达式为false时执行。 语法(Syntax) if-then-else语句的语法是 - if condition then S1 else S2; 其中,S1和S2是不同的陈述。Please note that the statement S1 is not followed by a semicolon。 在if-then-else语句中,当测试条件为真时,执行语句S1...
進階編輯器支援條件式指令(if, then, else)。 它可讓您定義更複雜的運算式。 它由下列元素組成: if:先評估條件。 then:條件評估結果為true時要評估的運算式。 else:條件評估結果為false時要評估的運算式。 NOTE 所有運算式都必須加上括弧。 if (<expression1>...
' Multiple-line syntax: If condition [ Then ] [ statements ] [ ElseIf elseifcondition [ Then ] [ elseifstatements ] ] [ Else [ elsestatements ] ] End If ' Single-line syntax: If condition Then [ statements ] [ Else [ elsestatements ] ] 部件...
' Multiline syntax:Ifcondition [Then] [ statements ] [ElseIfelseifcondition [Then] [ elseifstatements ] ] [Else[ elsestatements ] ]EndIf' Single-line syntax:IfconditionThen[ statements ] [Else[ elsestatements ] ] 指向示例代码的快速链接 ...
' Multiline syntax:Ifcondition [Then] [ statements ] [ElseIfelseifcondition [Then] [ elseifstatements ] ] [Else[ elsestatements ] ]EndIf' Single-line syntax:IfconditionThen[ statements ] [Else[ elsestatements ] ] 指向示例代码的快速链接 ...
if [ 条件判断式1 ] then 命令 elif [ 条件判断式2 ] then 命令 ... else 命令 ...
This topic is already discussed in conditionaloperatorsbut we want to repeat it once again as now it will be easier to understand because it is a shorter syntax of if then else. Ternary Operator takes three operand in which first one is boolean expression, second and third operands are values...
' Multiline syntax:Ifcondition [Then] [ statements ] [ElseIfelseifcondition [Then] [ elseifstatements ] ] [Else[ elsestatements ] ]EndIf' Single-line syntax:IfconditionThen[ statements ] [Else[ elsestatements ] ] 範例程式碼的快速連結 ...
else Command fi 别忘了这个结尾 If语句忘了结尾fi test.sh: line 14: syntax error: unexpected end of fi if 的三种条件表达式 if command then if 函数 then 命令执行成功,等于返回0 (比如grep ,找到匹配) 执行失败,返回非0 (grep,没找到匹配) ...