FatFs - f_putc

## f_putc

The f_putc funciton puts a character to the file.

    int f_putc (
      TCHAR chr,  /* [IN] A character to put */
      FIL* fp     /* [IN] File object */
    );

#### Parameters

chr
  A character to be put.
fp
  Pointer to the open file object structuer.

#### Return Values

When the character was written successfuly, it returns number of characters written. When the function failed due to disk full or any error, an `EOF (-1)` will be returned.

When FatFs is configured to Unicode API (`_LFN_UNICODE == 1`), character encoding on the string fuctions, `f_putc`, `f_puts`, `f_printf` and `f_gets` function, is also switched to Unicode. The character encoding on the file to be read/written via those functions is selected by `_STRF_ENCODE` option.

#### QuickInfo

This is a wrapper function of `f_write` function. Available when `_FS_READONLY == 0` and `_USE_STRFUNC` is 1 or 2. When it is set to 2, a `'\n'` is converted to `'\r'+'\n'`.

#### See Also

`f_open, f_puts, f_printf, f_gets, f_close, FIL`

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