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<h1 class="topictitle1">Numeric host variables in C and C++ applications that use SQL</h1>
<div><p>The topic contains a figure showing the syntax for valid numeric
host variable declarations.</p>
<div class="section"><h4 class="sectiontitle">Numeric</h4><pre><span><img src="./c.gif" border="0" alt="Read syntax diagram" longdesc="rzajpcnumvarsyn1.htm" /></span><a href="#d0e42"><img src="./c.gif" border="0" alt="Skip visual syntax diagram" /></a>
>>-+--------+--+----------+------------------------------------->
   +-auto---+ +-const----+   
   +-extern-+ '-volatile-'   
   '-static-'    
>--+-float----------------------------------+------------------->
   +-double---------------------------------+   
   +-decimal (--<i>precision</i>--+----------+--)--+   
   | '-,--<i>scale</i>-' |   
   | .-int-. |   
   '-+-+--------+--+-long long-+--+-----+-+-'   
    | '-signed-' +-long------+ |    
    | '-short-----' |    
    +-sqlint32---------------------------+    
    '-sqlint64---------------------------'    
   .-,----------------------------------.    
   V |    
>----<i>variable-name</i>--+-----------------+-+-- ; ----------------->&lt;
    '- = --<i>expression</i>-'    
</pre><a name="d0e42"></a></div>
<div class="section"> <div class="note"><span class="notetitle">Notes:</span> <ol><li>Precision and scale must be integer constants. Precision may be in the
range from 1 to 63. Scale may be in the range from 0 to the precision.</li>
<li>If using the decimal data type, the header file decimal.h must be included.</li>
<li>If using sqlint32 or sqlint64, the header file sqlsystm.h must be included.</li>
</ol>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzajpdeclaringhostc.htm" title="The C and C++ precompilers recognize only a subset of valid C and C++ declarations as valid host variable declarations.">Declare host variables in C and C++ applications that use SQL</a></div>
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