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core/com.nokia.carbide.cpp.compiler.doc.user/html/cpp_compiler/cpp_ctrl_var_scope.htm
author Deepak Modgil <Deepak.Modgil@Nokia.com>
Fri, 03 Apr 2009 23:33:03 +0100
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<title>Controlling Variable Scope in for Statements</title>
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<link rel="StyleSheet" href="../../book.css" type="text/css"/>
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<h3>Controlling Variable Scope in for Statements</h3>
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<p>If you enable the Legacy for-scoping setting , the compiler generates an error when it encounters a variable scope issue that the ISO C++ standard disallows, but is allowed in the C++ language specified in <strong>The Annotated C++ Reference Manual</strong>.</p>
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<p>With this option off, the compiler allows variables defined in a for statement to have scope outside the for statement.</p>
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<div class="listing">
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  <h4>Listing 1. Example of a Local Variable Outside a for Statement</h4>
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  <p>for(int i=1; i&lt;1000; i++) { /* ... */ }<br />
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    return i; // OK in ARM, Error in Carbide.c++</p>
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</div>
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<p>This setting corresponds to the pragma <a href="../pragmas/p_arm_conform.htm">ARM_conform</a>. To check this setting, use <span class="code">__option (ARM_conform)</span>. By default, this setting is <span class="code">off</span>.</p>
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<p>See <a href="../symbols/sym_settings.htm">Checking Option Settings</a> for information on how to use this directive. <br />
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</p>
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<div id="footer">Copyright &copy; 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. <br>License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a></div>
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FCL/sftools/dev/ide/carbidecpp