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    <a href="../index-2.html">cppreference.com</a> &gt; <a href=
    "index.html">Standard C I/O</a> &gt; <a href="putc.html">putc</a>
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    putc
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    Syntax:
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  <pre class="syntax-box">
  #include &lt;cstdio&gt;
  int putc( int ch, FILE *stream );
</pre>

  <p>The putc() function writes the character <em>ch</em> to
  <em>stream</em>. The return value is the character written, or
  <strong>EOF</strong> if there is an error. For example:</p>
<pre class="prettyprint">
   int ch;
   FILE *input, *output;
   input = fopen( &quot;tmp.c&quot;, &quot;r&quot; );
   output = fopen( &quot;tmpCopy.c&quot;, &quot;w&quot; );
   ch = getc( input );
   while( ch != <strong>EOF</strong> ) {
     putc( ch, output );
     ch = getc( input );
   }
   fclose( input );
   fclose( output );
</pre>

  <p>generates a copy of the file tmp.c called tmpCopy.c.</p>

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    <a href="feof.html">feof</a><br>
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    <a href="fputc.html">fputc</a><br>
    <a href="getc.html">getc</a><br>
    <a href="getchar.html">getchar</a><br>
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