<ruby id="bdb3f"></ruby>

    <p id="bdb3f"><cite id="bdb3f"></cite></p>

      <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
        <p id="bdb3f"><cite id="bdb3f"></cite></p>

          <pre id="bdb3f"></pre>
          <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>

          <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
          <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>

          <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>

                <ruby id="bdb3f"></ruby>

                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                >[success] # if 語句 ~~~ 1.condition是判斷條件,如果 condition 成立(返回“真”),那么 then 后邊的語句將會被執行,fi來閉合,如下: if condition then statement(s) fi 也可以 then 和 if 寫在一行: if condition; then statement(s) fi ~~~ >[danger] ##### 案例 ~~~ 1.(())是一種數學計算命令,它除了可以進行最基本的加減乘除運算,還可以進行大于、小于、等于等關系運算, 以及與、或、非邏輯運算 ~~~ ~~~ #!/bin/bash read age if(($age>1)) then echo '大于1' fi ~~~ >[success] # if else 語句 ~~~ 1.如果 condition 成立,那么 then 后邊的 statement1 語句將會被執行;否則,執行 else 后邊的 statement2 語句。 if? condition then ?? statement1 else ?? statement2 fi ~~~ >[danger] ##### 例子 ~~~ #!/bin/bash read a read b if (( $a == $b )) then echo "a和b相等" else echo "a和b不相等,輸入錯誤" fi ~~~ >[success] # if elif else 語句 ~~~ 1.if 和 elif 后邊都得跟著 then if? condition1 then ?? statement1 elif condition2 then ? ? statement2 elif condition3 then ? ? statement3 …… else ?? statementn fi ~~~ >[danger] ##### 例子 ~~~ #!/bin/bash read age if (( $age <= 2 )); then echo "嬰兒" elif (( $age >= 3 && $age <= 8 )); then echo "幼兒" elif (( $age >= 9 && $age <= 17 )); then echo "少年" elif (( $age >= 18 && $age <=25 )); then echo "成年" elif (( $age >= 26 && $age <= 40 )); then echo "青年" elif (( $age >= 41 && $age <= 60 )); then echo "中年" else echo "老年" fi ~~~
                  <ruby id="bdb3f"></ruby>

                  <p id="bdb3f"><cite id="bdb3f"></cite></p>

                    <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
                      <p id="bdb3f"><cite id="bdb3f"></cite></p>

                        <pre id="bdb3f"></pre>
                        <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>

                        <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
                        <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>

                        <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>

                              <ruby id="bdb3f"></ruby>

                              哎呀哎呀视频在线观看