fatfs/doc/en/putc.html

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   9 <title>FatFs - f_putc</title>
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  13
  14 <div class="para func">
  15 <h2>f_putc</h2>
  16 <p>The f_putc funciton puts a character to the file.</p>
  17 <pre>
  18 int f_putc (
  19   TCHAR <span class="arg">chr</span>,  <span class="c">/* [IN] A character to put */</span>
  20   FIL* <span class="arg">fp</span>     <span class="c">/* [IN] File object */</span>
  21 );
  22 </pre>
  23 </div>
  24
  25 <div class="para arg">
  26 <h4>Parameters</h4>
  27 <dl class="par">
  28 <dt>chr</dt>
  29 <dd>A character to be put.</dd>
  30 <dt>fp</dt>
  31 <dd>Pointer to the open file object structuer.</dd>
  32 </dl>
  33 </div>
  34
  35
  36 <div class="para ret">
  37 <h4>Return Values</h4>
  38 <p>When the character was written successfuly, it returns number of characters written. When the function failed due to disk full or any error, an <tt>EOF (-1)</tt> will be returned.</p>
  39 <p>When FatFs is configured to Unicode API (<tt>_LFN_UNICODE == 1</tt>), character encoding on the string fuctions, <tt>f_putc</tt>, <tt>f_puts</tt>, <tt>f_printf</tt> and <tt>f_gets</tt> function, is also switched to Unicode. The character encoding on the file to be read/written via those functions is selected by <tt>_STRF_ENCODE</tt> option.</p>
  40 </div>
  41
  42
  43 <div class="para comp">
  44 <h4>QuickInfo</h4>
  45 <p>This is a wrapper function of <a href="write.html"><tt>f_write</tt></a> function. Available when <tt>_FS_READONLY == 0</tt> and <tt>_USE_STRFUNC</tt> is 1 or 2. When it is set to 2, a <tt>'\n'</tt> is converted to <tt>'\r'+'\n'</tt>.</p>
  46 </div>
  47
  48
  49 <div class="para ref">
  50 <h4>See Also</h4>
  51 <p><tt><a href="open.html">f_open</a>, <a href="puts.html">f_puts</a>, <a href="printf.html">f_printf</a>, <a href="gets.html">f_gets</a>, <a href="close.html">f_close</a>, <a href="sfile.html">FIL</a></tt></p>
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