<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>

                企業??AI智能體構建引擎,智能編排和調試,一鍵部署,支持知識庫和私有化部署方案 廣告
                # perl 中的`if-elsif-else`語句 > 原文: [https://beginnersbook.com/2017/02/if-elsif-else-statement-in-perl/](https://beginnersbook.com/2017/02/if-elsif-else-statement-in-perl/) 當我們需要檢查多個條件時使用`if-elsif-else`語句。在這個聲明中,我們只有一個`if`和一個`else`,但是我們可以有多個`elsif`。這是它的樣子: ```perl if(condition_1) { #if condition_1 is true execute this statement(s); } elsif(condition_2) { #execute this if condition_1 is not met and #condition_2 is met statement(s); } elsif(condition_3) { #execute this if condition_1 & condition_2 are #not met and condition_3 is met statement(s); } . . . else { #if none of the condition is true #then these statements gets executed statement(s); } ``` **注意**:這里需要注意的最重要的一點是,在`if-elsif-else`語句中,只要滿足條件,就會執行相應的語句集,忽略其余。如果沒有滿足條件,則執行`else`內的語句。 #### 例: ```perl #!/usr/local/bin/perl printf "Enter any integer between 1 & 99999:"; $num = <STDIN>; if( $num <100 && $num>=1) { printf "Its a two digit number\n"; } elsif( $num <1000 && $num>=100) { printf "Its a three digit number\n"; } elsif( $num <10000 && $num>=1000) { printf "Its a four digit number\n"; } elsif( $num <100000 && $num>=10000) { printf "Its a five digit number\n"; } else { printf "Please enter number between 1 & 99999\n"; } ``` **輸出:** ```perl Enter any integer between 1 & 99999:8019 Its a four digit number ```
                  <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