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72 lines
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<title>Mixed Declarations - Using the GNU Compiler Collection (GCC)</title>
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<a name="Mixed-Declarations"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Function-Attributes.html#Function-Attributes">Function Attributes</a>,
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Previous: <a rel="previous" accesskey="p" href="Cast-to-Union.html#Cast-to-Union">Cast to Union</a>,
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Up: <a rel="up" accesskey="u" href="C-Extensions.html#C-Extensions">C Extensions</a>
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<h3 class="section">6.30 Mixed Declarations and Code</h3>
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<p><a name="index-mixed-declarations-and-code-3031"></a><a name="index-declarations_002c-mixed-with-code-3032"></a><a name="index-code_002c-mixed-with-declarations-3033"></a>
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ISO C99 and ISO C++ allow declarations and code to be freely mixed
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within compound statements. As an extension, GNU C also allows this in
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C90 mode. For example, you could do:
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<pre class="smallexample"> int i;
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/* <span class="roman">...</span> */
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i++;
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int j = i + 2;
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</pre>
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<p>Each identifier is visible from where it is declared until the end of
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the enclosing block.
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