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<title>warn_unusedarg</title>
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<h3>warn_unusedarg</h3>
<p> Controls the recognition of unreferenced arguments.</p>
<h5>Syntax</h5>
<p class="code">#pragma warn_unusedarg on | off | reset</p>
<h5>Targets</h5>
All platforms.<br />
<h5>Remarks</h5>
<p>If you enable this pragma, the compiler issues a warning when it encounters an argument you declare but do not use. For more information about this warning, see “Unused Arguments”. To suppress this warning in C++ source code, leave an argument identifier out of the function parameter list. Listing 10.33 shows an example.</p>
<p> This pragma corresponds to the Unused Arguments setting . To check this setting, use <span class="code">__option (warn_unusedarg)</span>, described in <a href="../symbols/sym_settings.htm">Checking Settings</a>. The default setting is <span class="code">off</span>. </p>
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