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@node Stdio @chapter Input and Output (@file{stdio.h}) 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. The underlying facilities for input and output depend on the host system, but these functions provide a uniform interface. The corresponding declarations are in @file{stdio.h}. The reentrant versions of these functions use macros @example _stdin_r(@var{reent}) _stdout_r(@var{reent}) _stderr_r(@var{reent}) @end example @noindent instead of the globals @code{stdin}, @code{stdout}, and @code{stderr}. The argument <[reent]> is a pointer to a reentrancy structure. @menu * clearerr:: Clear file or stream error indicator * fclose:: Close a file * feof:: Test for end of file * ferror:: Test whether read/write error has occurred * fflush:: Flush buffered file output * fgetc:: Get a character from a file or stream * fgetpos:: Record position in a stream or file * fgets:: Get character string from a file or stream * fiprintf:: Write formatted output to file (integer only) * fopen:: Open a file * fdopen:: Turn an open file into a stream * fputc:: Write a character on a stream or file * fputs:: Write a character string in a file or stream * fread:: Read array elements from a file * freopen:: Open a file using an existing file descriptor * fseek:: Set file position * fsetpos:: Restore position of a stream or file * ftell:: Return position in a stream or file * fwrite:: Write array elements from memory to a file or stream * getc:: Get a character from a file or stream (macro) * getchar:: Get a character from standard input (macro) * gets:: Get character string from standard input (obsolete) * iprintf:: Write formatted output (integer only) * mktemp:: Generate unused file name * perror:: Print an error message on standard error * putc:: Write a character on a stream or file (macro) * putchar:: Write a character on standard output (macro) * puts:: Write a character string on standard output * remove:: Delete a file's name * rename:: Rename a file * rewind:: Reinitialize a file or stream * setbuf:: Specify full buffering for a file or stream * setvbuf:: Specify buffering for a file or stream * siprintf:: Write formatted output (integer only) * printf:: Write formatted output * scanf:: Scan and format input * tmpfile:: Create a temporary file * tmpnam:: Generate name for a temporary file * vprintf:: Format variable argument list @end menu @page @include stdio/clearerr.def @page @include stdio/fclose.def @page @include stdio/feof.def @page @include stdio/ferror.def @page @include stdio/fflush.def @page @include stdio/fgetc.def @page @include stdio/fgetpos.def @page @include stdio/fgets.def @page @include stdio/fiprintf.def @page @include stdio/fopen.def @page @include stdio/fdopen.def @page @include stdio/fputc.def @page @include stdio/fputs.def @page @include stdio/fread.def @page @include stdio/freopen.def @page @include stdio/fseek.def @page @include stdio/fsetpos.def @page @include stdio/ftell.def @page @include stdio/fwrite.def @page @include stdio/getc.def @page @include stdio/getchar.def @page @include stdio/gets.def @page @include stdio/iprintf.def @page @include stdio/mktemp.def @page @include stdio/perror.def @page @include stdio/putc.def @page @include stdio/putchar.def @page @include stdio/puts.def @page @include stdio/remove.def @page @include stdio/rename.def @page @include stdio/rewind.def @page @include stdio/setbuf.def @page @include stdio/setvbuf.def @page @include stdio/siprintf.def @page @include stdio/sprintf.def @page @include stdio/sscanf.def @page @include stdio/tmpfile.def @page @include stdio/tmpnam.def @page @include stdio/vfprintf.def
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