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