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82 lines
3.3 KiB
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82 lines
3.3 KiB
HTML
4 years ago
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<title>Case Ranges - Using the GNU Compiler Collection (GCC)</title>
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<link rel="up" href="C-Extensions.html#C-Extensions" title="C Extensions">
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<link rel="prev" href="Designated-Inits.html#Designated-Inits" title="Designated Inits">
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<link rel="next" href="Cast-to-Union.html#Cast-to-Union" title="Cast to Union">
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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<div class="node">
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<a name="Case-Ranges"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Cast-to-Union.html#Cast-to-Union">Cast to Union</a>,
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Previous: <a rel="previous" accesskey="p" href="Designated-Inits.html#Designated-Inits">Designated Inits</a>,
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Up: <a rel="up" accesskey="u" href="C-Extensions.html#C-Extensions">C Extensions</a>
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<hr>
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</div>
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<h3 class="section">6.28 Case Ranges</h3>
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<p><a name="index-case-ranges-3027"></a><a name="index-ranges-in-case-statements-3028"></a>
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You can specify a range of consecutive values in a single <code>case</code> label,
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like this:
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<pre class="smallexample"> case <var>low</var> ... <var>high</var>:
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</pre>
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<p class="noindent">This has the same effect as the proper number of individual <code>case</code>
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labels, one for each integer value from <var>low</var> to <var>high</var>, inclusive.
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<p>This feature is especially useful for ranges of ASCII character codes:
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<pre class="smallexample"> case 'A' ... 'Z':
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</pre>
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<p><strong>Be careful:</strong> Write spaces around the <code>...</code>, for otherwise
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it may be parsed wrong when you use it with integer values. For example,
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write this:
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<pre class="smallexample"> case 1 ... 5:
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</pre>
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<p class="noindent">rather than this:
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<pre class="smallexample"> case 1...5:
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</pre>
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</body></html>
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