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<a name="siscanf_002c-fiscanf_002c-iscanf_002d_002d_002dscan-and-format-non_002dfloating-input"></a>
<h3 class="section">4.60 <code>siscanf</code>, <code>fiscanf</code>, <code>iscanf</code>&mdash;scan and format non-floating input</h3>
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<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;stdio.h&gt;

int iscanf(const char *<var>format</var>, ...);
int fiscanf(FILE *<var>fd</var>, const char *<var>format</var>, ...);
int siscanf(const char *<var>str</var>, const char *<var>format</var>, ...);

int _iscanf_r(struct _reent *<var>ptr</var>, const char *<var>format</var>, ...);
int _fiscanf_r(struct _reent *<var>ptr</var>, FILE *<var>fd</var>, 
    const char *<var>format</var>, ...);
int _siscanf_r(struct _reent *<var>ptr</var>, const char *<var>str</var>,
    const char *<var>format</var>, ...);

</pre></div>
<p><strong>Description</strong><br>
<code>iscanf</code>, <code>fiscanf</code>, and <code>siscanf</code> are the same as
<code>scanf</code>, <code>fscanf</code>, and <code>sscanf</code> respectively, only that
they restrict the available formats to non-floating-point
format specifiers.
</p>
<p>The routines <code>_iscanf_r</code>, <code>_fiscanf_r</code>, and <code>_siscanf_r</code> are reentrant
versions of <code>iscanf</code>, <code>fiscanf</code>, and <code>siscanf</code> that take an additional
first argument pointing to a reentrancy structure.
</p>
<br>
<p><strong>Returns</strong><br>
<code>iscanf</code> returns the number of input fields successfully
scanned, converted and stored; the return value does
not include scanned fields which were not stored.
</p>
<p>If <code>iscanf</code> attempts to read at end-of-file, the return
value is <code>EOF</code>.
</p>
<p>If no fields were stored, the return value is <code>0</code>.
</p>
<br>
<p><strong>Portability</strong><br>
<code>iscanf</code>, <code>fiscanf</code>, and <code>siscanf</code> are newlib extensions.
</p>
<p>Supporting OS subroutines required: <code>close</code>, <code>fstat</code>, <code>isatty</code>,
<code>lseek</code>, <code>read</code>, <code>sbrk</code>, <code>write</code>.
</p>
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