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| <h2 class="chapter">4 Input and Output (<samp><span class="file">stdio.h</span></samp>)</h2> |
| |
| <p>This chapter comprises functions to manage files |
| or other input/output streams. Among these functions are subroutines |
| to generate or scan strings according to specifications from a format string. |
| |
| <p>The underlying facilities for input and output depend on the host |
| system, but these functions provide a uniform interface. |
| |
| <p>The corresponding declarations are in <samp><span class="file">stdio.h</span></samp>. |
| |
| <p>The reentrant versions of these functions use macros |
| |
| <pre class="example"> _stdin_r(<var>reent</var>) |
| _stdout_r(<var>reent</var>) |
| _stderr_r(<var>reent</var>) |
| </pre> |
| <p class="noindent">instead of the globals <code>stdin</code>, <code>stdout</code>, and |
| <code>stderr</code>. The argument <[reent]> is a pointer to a reentrancy |
| structure. |
| |
| <ul class="menu"> |
| <li><a accesskey="1" href="clearerr.html#clearerr">clearerr</a>: Clear file or stream error indicator |
| <li><a accesskey="2" href="diprintf.html#diprintf">diprintf</a>: Print to a file descriptor (integer only) |
| <li><a accesskey="3" href="dprintf.html#dprintf">dprintf</a>: Print to a file descriptor |
| <li><a accesskey="4" href="fclose.html#fclose">fclose</a>: Close a file |
| <li><a accesskey="5" href="fcloseall.html#fcloseall">fcloseall</a>: Close all files |
| <li><a accesskey="6" href="fdopen.html#fdopen">fdopen</a>: Turn an open file into a stream |
| <li><a accesskey="7" href="feof.html#feof">feof</a>: Test for end of file |
| <li><a accesskey="8" href="ferror.html#ferror">ferror</a>: Test whether read/write error has occurred |
| <li><a accesskey="9" href="fflush.html#fflush">fflush</a>: Flush buffered file output |
| <li><a href="fgetc.html#fgetc">fgetc</a>: Get a character from a file or stream |
| <li><a href="fgetpos.html#fgetpos">fgetpos</a>: Record position in a stream or file |
| <li><a href="fgets.html#fgets">fgets</a>: Get character string from a file or stream |
| <li><a href="fgetwc.html#fgetwc">fgetwc</a>: Get a wide character from a file or stream |
| <li><a href="fgetws.html#fgetws">fgetws</a>: Get a wide character string from a file or stream |
| <li><a href="fileno.html#fileno">fileno</a>: Get file descriptor associated with stream |
| <li><a href="fmemopen.html#fmemopen">fmemopen</a>: Open a stream around a fixed-length buffer |
| <li><a href="fopen.html#fopen">fopen</a>: Open a file |
| <li><a href="fopencookie.html#fopencookie">fopencookie</a>: Open a stream with custom callbacks |
| <li><a href="fpurge.html#fpurge">fpurge</a>: Discard all pending I/O on a stream |
| <li><a href="fputc.html#fputc">fputc</a>: Write a character on a stream or file |
| <li><a href="fputs.html#fputs">fputs</a>: Write a character string in a file or stream |
| <li><a href="fputwc.html#fputwc">fputwc</a>: Write a wide character to a file or stream |
| <li><a href="fputws.html#fputws">fputws</a>: Write a wide character string to a file or stream |
| <li><a href="fread.html#fread">fread</a>: Read array elements from a file |
| <li><a href="freopen.html#freopen">freopen</a>: Open a file using an existing file descriptor |
| <li><a href="fseek.html#fseek">fseek</a>: Set file position |
| <li><a href="fsetpos.html#fsetpos">fsetpos</a>: Restore position of a stream or file |
| <li><a href="ftell.html#ftell">ftell</a>: Return position in a stream or file |
| <li><a href="funopen.html#funopen">funopen</a>: Open a stream with custom callbacks |
| <li><a href="fwide.html#fwide">fwide</a>: Set and determine the orientation of a FILE stream |
| <li><a href="fwrite.html#fwrite">fwrite</a>: Write array elements from memory to a file or stream |
| <li><a href="getc.html#getc">getc</a>: Get a character from a file or stream (macro) |
| <li><a href="getc_005funlocked.html#getc_005funlocked">getc_unlocked</a>: Get a character from a file or stream (macro) |
| <li><a href="getchar.html#getchar">getchar</a>: Get a character from standard input (macro) |
| <li><a href="getchar_005funlocked.html#getchar_005funlocked">getchar_unlocked</a>: Get a character from standard input (macro) |
| <li><a href="getdelim.html#getdelim">getdelim</a>: Get character string from a file or stream |
| <li><a href="getline.html#getline">getline</a>: Get character string from a file or stream |
| <li><a href="gets.html#gets">gets</a>: Get character string from standard input (obsolete) |
| <li><a href="getw.html#getw">getw</a>: Get a word (int) from a file or stream |
| <li><a href="getwchar.html#getwchar">getwchar</a>: Get a wide character from standard input |
| <li><a href="mktemp.html#mktemp">mktemp</a>: Generate unused file name |
| <li><a href="open_005fmemstream.html#open_005fmemstream">open_memstream</a>: Open a write stream around an arbitrary-length buffer |
| <li><a href="perror.html#perror">perror</a>: Print an error message on standard error |
| <li><a href="putc.html#putc">putc</a>: Write a character on a stream or file (macro) |
| <li><a href="putc_005funlocked.html#putc_005funlocked">putc_unlocked</a>: Write a character on a stream or file (macro) |
| <li><a href="putchar.html#putchar">putchar</a>: Write a character on standard output (macro) |
| <li><a href="putchar_005funlocked.html#putchar_005funlocked">putchar_unlocked</a>: Write a character on standard output (macro) |
| <li><a href="puts.html#puts">puts</a>: Write a character string on standard output |
| <li><a href="putw.html#putw">putw</a>: Write a word (int) to a file or stream |
| <li><a href="putwchar.html#putwchar">putwchar</a>: Write a wide character to standard output |
| <li><a href="remove.html#remove">remove</a>: Delete a file's name |
| <li><a href="rename.html#rename">rename</a>: Rename a file |
| <li><a href="rewind.html#rewind">rewind</a>: Reinitialize a file or stream |
| <li><a href="setbuf.html#setbuf">setbuf</a>: Specify full buffering for a file or stream |
| <li><a href="setbuffer.html#setbuffer">setbuffer</a>: Specify full buffering for a file or stream with size |
| <li><a href="setlinebuf.html#setlinebuf">setlinebuf</a>: Specify line buffering for a file or stream |
| <li><a href="setvbuf.html#setvbuf">setvbuf</a>: Specify buffering for a file or stream |
| <li><a href="siprintf.html#siprintf">siprintf</a>: Write formatted output (integer only) |
| <li><a href="siscanf.html#siscanf">siscanf</a>: Scan and format input (integer only) |
| <li><a href="sprintf.html#sprintf">sprintf</a>: Write formatted output |
| <li><a href="sscanf.html#sscanf">sscanf</a>: Scan and format input |
| <li><a href="swprintf.html#swprintf">swprintf</a>: Write formatted wide character output |
| <li><a href="swscanf.html#swscanf">swscanf</a>: Scan and format wide character input |
| <li><a href="tmpfile.html#tmpfile">tmpfile</a>: Create a temporary file |
| <li><a href="tmpnam.html#tmpnam">tmpnam</a>: Generate name for a temporary file |
| <li><a href="ungetc.html#ungetc">ungetc</a>: Push data back into a stream |
| <li><a href="ungetwc.html#ungetwc">ungetwc</a>: Push wide character data back into a stream |
| <li><a href="vfprintf.html#vfprintf">vfprintf</a>: Format variable argument list |
| <li><a href="vfscanf.html#vfscanf">vfscanf</a>: Scan variable argument list |
| <li><a href="vfwprintf.html#vfwprintf">vfwprintf</a>: Format variable wide character argument list |
| <li><a href="vfwscanf.html#vfwscanf">vfwscanf</a>: Scan and format argument list from wide character input |
| <li><a href="viprintf.html#viprintf">viprintf</a>: Format variable argument list (integer only) |
| <li><a href="viscanf.html#viscanf">viscanf</a>: Scan variable format list (integer only) |
| </ul> |
| |
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