67 lines
3.1 KiB
Markdown
67 lines
3.1 KiB
Markdown
---
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title: 『新版C言語プログラミングレッスン 入門編』第９章・配列
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author: kazu634
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date: 2008-05-01
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wordtwit_post_info:
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categories:
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- C
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- Programming
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---
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<div class="section">
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<p>
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続きー
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</p>
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<h4>
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配列の宣言の仕方
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</h4>
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<p>
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こんな感じで宣言する。
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</p>
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<pre class="syntax-highlight">
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<span class="synType">int</span> score[<span class="synConstant">3</span>];
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</pre>
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<p>
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ここで注意すべきは宣言するときは「要素数」を指定すること。添え字の最大値は「要素数-1」だよ！
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</p>
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<p>
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<a name="seemore"></a>
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</p>
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<p>
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サンプルはこんな感じだよ:
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</p>
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<pre class="syntax-highlight">
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<span class="synPreProc">#include </span><span class="synConstant"><stdio.h></span>
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<span class="synComment">/* プロトタイプ宣言 */</span>
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<span class="synType">int</span> main(<span class="synType">void</span>);
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<span class="synComment">/* 関数 main */</span>
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<span class="synType">int</span> main(<span class="synType">void</span>)
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{
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<span class="synType">int</span> ten[<span class="synConstant">3</span>];
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<span class="synType">float</span> heikin;
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ten[<span class="synConstant"></span>] = <span class="synConstant">65</span>;
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ten[<span class="synConstant">1</span>] = <span class="synConstant">90</span>;
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ten[<span class="synConstant">2</span>] = <span class="synConstant">75</span>;
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heikin = (ten[<span class="synConstant"></span>] + ten[<span class="synConstant">1</span>] + ten[<span class="synConstant">2</span>]) / <span class="synConstant">3.0</span>;
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printf (<span class="synConstant">"国語は </span><span class="synSpecial">%d</span><span class="synConstant"> 点</span><span class="synSpecial">\n</span><span class="synConstant">"</span>, ten[<span class="synConstant"></span>]);
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printf (<span class="synConstant">"数学は </span><span class="synSpecial">%d</span><span class="synConstant"> 点</span><span class="synSpecial">\n</span><span class="synConstant">"</span>, ten[<span class="synConstant">1</span>]);
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printf (<span class="synConstant">"英語は </span><span class="synSpecial">%d</span><span class="synConstant"> 点</span><span class="synSpecial">\n</span><span class="synConstant">"</span>, ten[<span class="synConstant">2</span>]);
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printf (<span class="synConstant">"平均点は </span><span class="synSpecial">%1f</span><span class="synConstant"> 点"</span>, heikin);
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printf (<span class="synConstant">"</span><span class="synSpecial">\n</span><span class="synConstant">"</span>);
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<span class="synStatement">return</span>(<span class="synConstant"></span>);
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}
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</pre>
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<p>
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二次元とか色々できるけど、そこらへんはわかりそうだから省略。
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</p>
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</div>
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