https://www.typea.info/tips_/index.php?action=history&feed=atom&title=C%2B%2B_%E5%A4%96%E9%83%A8%E8%A8%98%E6%86%B6%E3%82%AF%E3%83%A9%E3%82%B9%28extern%29 2026-05-10T11:05:33Z このウィキのこのページに関する変更履歴 MediaWiki 1.34.0 https://www.typea.info/tips_/index.php?title=C%2B%2B_%E5%A4%96%E9%83%A8%E8%A8%98%E6%86%B6%E3%82%AF%E3%83%A9%E3%82%B9(extern)&diff=4728&oldid=prev 2020-02-15T08:34:09Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="ja"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← 古い版</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">2020年2月15日 (土) 08:34時点における版</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >1行目:</td> <td colspan="2" class="diff-lineno">1行目:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==C++ 外部記憶クラス(extern)==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==C++ 外部記憶クラス(extern)==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline"> | </del>[[C++]] | [[C++によるオブジェクト指向プログラミング]]</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[C++]] | [[C++によるオブジェクト指向プログラミング]] <ins class="diffchange diffchange-inline">| </ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{amazon|4756118895}}</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{amazon|4756118895}}</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> </table>

Piroto https://www.typea.info/tips_/index.php?title=C%2B%2B_%E5%A4%96%E9%83%A8%E8%A8%98%E6%86%B6%E3%82%AF%E3%83%A9%E3%82%B9(extern)&diff=4484&oldid=prev 2020-02-15T08:30:34Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="ja"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← 古い版</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">2020年2月15日 (土) 08:30時点における版</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >1行目:</td> <td colspan="2" class="diff-lineno">1行目:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==C++ 外部記憶クラス(extern)==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==C++ 外部記憶クラス(extern)==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[C++]][[C++によるオブジェクト指向プログラミング]]</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline"> | </ins>[[C++]] <ins class="diffchange diffchange-inline">| </ins>[[C++によるオブジェクト指向プログラミング]]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{amazon|4756118895}}</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{amazon|4756118895}}</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> </table>

Piroto https://www.typea.info/tips_/index.php?title=C%2B%2B_%E5%A4%96%E9%83%A8%E8%A8%98%E6%86%B6%E3%82%AF%E3%83%A9%E3%82%B9(extern)&diff=3976&oldid=prev 2020-02-15T08:18:17Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="ja"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← 古い版</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">2020年2月15日 (土) 08:18時点における版</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >1行目:</td> <td colspan="2" class="diff-lineno">1行目:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==C++ 外部記憶クラス(extern)==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==C++ 外部記憶クラス(extern)==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[C++][C++によるオブジェクト指向プログラミング]]</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[C++]<ins class="diffchange diffchange-inline">][</ins>[C++によるオブジェクト指向プログラミング]]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{amazon|4756118895}}</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{amazon|4756118895}}</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> </table>

Piroto https://www.typea.info/tips_/index.php?title=C%2B%2B_%E5%A4%96%E9%83%A8%E8%A8%98%E6%86%B6%E3%82%AF%E3%83%A9%E3%82%B9(extern)&diff=2998&oldid=prev 2020-02-15T08:01:00Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="ja"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← 古い版</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">2020年2月15日 (土) 08:01時点における版</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >1行目:</td> <td colspan="2" class="diff-lineno">1行目:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==C++ 外部記憶クラス(extern)==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==C++ 外部記憶クラス(extern)==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[C++][C++によるオブジェクト指向プログラミング]</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">[</ins>[C++][C++によるオブジェクト指向プログラミング<ins class="diffchange diffchange-inline">]</ins>]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{amazon|4756118895}}</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{amazon|4756118895}}</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l29" >29行目:</td> <td colspan="2" class="diff-lineno">29行目:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     double x = 3.5;</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     double x = 3.5;</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>      </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>      </div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>     cout <del class="diffchange diffchange-inline">&lt;&lt; </del>PI <del class="diffchange diffchange-inline">&lt;&lt; </del>endl;</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>     cout <ins class="diffchange diffchange-inline">&amp;lt;&amp;lt; </ins>PI <ins class="diffchange diffchange-inline">&amp;lt;&amp;lt; </ins>endl;</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   </div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>     cout <del class="diffchange diffchange-inline">&lt;&lt; </del>circle(x) <del class="diffchange diffchange-inline">&lt;&lt; </del>endl;</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>     cout <ins class="diffchange diffchange-inline">&amp;lt;&amp;lt; </ins>circle(x) <ins class="diffchange diffchange-inline">&amp;lt;&amp;lt; </ins>endl;</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  }</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  }</div></td></tr> </table>

Piroto https://www.typea.info/tips_/index.php?title=C%2B%2B_%E5%A4%96%E9%83%A8%E8%A8%98%E6%86%B6%E3%82%AF%E3%83%A9%E3%82%B9(extern)&diff=1679&oldid=prev 2020-02-15T07:30:42Z

<p>ページの作成:「==C++ 外部記憶クラス(extern)== [C++][C++によるオブジェクト指向プログラミング] {{amazon|4756118895}} ====情報をブロックや関数の間…」</p> <p><b>新規ページ</b></p><div>==C++ 外部記憶クラス(extern)==<br /> [C++][C++によるオブジェクト指向プログラミング]<br /> {{amazon|4756118895}}<br /> <br /> ====情報をブロックや関数の間で伝達する1つの方法====<br /> *外部変数を使用する<br /> *変数が関数の外部で宣言されると、恒久的に記憶領域がそれに割り当てられる<br /> *その場合の記憶クラスのキーワードはextern<br /> <br /> [[File:0298_oop01.JPG]]<br /> =====circle.cpp=====<br /> double PI = 3.14159;<br /> <br /> double circle(double radius)<br /> {<br /> return (PI * radius * radius);<br /> }<br /> <br /> =====oop01.cpp=====<br /> // extern を指定するとコンパイラは変数がどこか他の場所か<br /> // 他のファイルで宣言されていると判断する<br /> extern double PI;<br /> <br /> // 関数は自動的にextern<br /> double circle(double);<br /> <br /> int main()<br /> {<br /> double x = 3.5;<br /> <br /> cout &lt;&lt; PI &lt;&lt; endl;<br /> <br /> cout &lt;&lt; circle(x) &lt;&lt; endl;<br /> }</div>

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