Originální popis anglicky:
stdio.h - standard buffered input/output
Návod, kniha: POSIX Programmer's Manual
#include <stdio.h>
Some of the functionality described on this reference page extends the
ISO C standard. Applications shall define the appropriate feature test
macro (see the System Interfaces volume of IEEE Std 1003.1-2001,
Section 2.2, The Compilation Environment) to enable the visibility of these
symbols in this header.
The
<stdio.h> header shall define the following macros as positive
integer constant expressions:
- BUFSIZ
- Size of <stdio.h> buffers.
- _IOFBF
- Input/output fully buffered.
- _IOLBF
- Input/output line buffered.
- _IONBF
- Input/output unbuffered.
- L_ctermid
- Maximum size of character array to hold ctermid()
output.
- L_tmpnam
- Maximum size of character array to hold tmpnam()
output.
- SEEK_CUR
- Seek relative to current position.
- SEEK_END
- Seek relative to end-of-file.
- SEEK_SET
- Seek relative to start-of-file.
The following macros shall be defined as positive integer constant expressions
which denote implementation limits:
- {FILENAME_MAX}
- Maximum size in bytes of the longest filename string that
the implementation guarantees can be opened.
- {FOPEN_MAX}
- Number of streams which the implementation guarantees can
be open simultaneously. The value is at least eight.
- {TMP_MAX}
- Minimum number of unique filenames generated by
tmpnam(). Maximum number of times an application can call
tmpnam() reliably. The value of {TMP_MAX} is at least 25.
On XSI-conformant systems, the value of {TMP_MAX} is at least
10000.
The following macro name shall be defined as a negative integer constant
expression:
- EOF
- End-of-file return value.
The following macro name shall be defined as a null pointer constant:
- NULL
- Null pointer.
The following macro name shall be defined as a string constant:
- P_tmpdir
- Default directory prefix for tempnam().
The following shall be defined as expressions of type "pointer to
FILE" that point to the
FILE objects associated,
respectively, with the standard error, input, and output streams:
- stderr
- Standard error output stream.
- stdin
- Standard input stream.
- stdout
- Standard output stream.
The following data types shall be defined through
typedef:
- FILE
- A structure containing information about a file.
- fpos_t
- A non-array type containing all information needed to
specify uniquely every position within a file.
- va_list
- As described in <stdarg.h> .
- size_t
- As described in <stddef.h> .
The following shall be declared as functions and may also be defined as macros.
Function prototypes shall be provided.
void clearerr(FILE *);
char *ctermid(char *);
int fclose(FILE *);
FILE *fdopen(int, const char *);
int feof(FILE *);
int ferror(FILE *);
int fflush(FILE *);
int fgetc(FILE *);
int fgetpos(FILE *restrict, fpos_t *restrict);
char *fgets(char *restrict, int, FILE *restrict);
int fileno(FILE *);
void flockfile(FILE *);
FILE *fopen(const char *restrict, const char *restrict);
int fprintf(FILE *restrict, const char *restrict, ...);
int fputc(int, FILE *);
int fputs(const char *restrict, FILE *restrict);
size_t fread(void *restrict, size_t, size_t, FILE *restrict);
FILE *freopen(const char *restrict, const char *restrict,
FILE *restrict);
int fscanf(FILE *restrict, const char *restrict, ...);
int fseek(FILE *, long, int);
int fseeko(FILE *, off_t, int);
int fsetpos(FILE *, const fpos_t *);
long ftell(FILE *);
off_t ftello(FILE *);
int ftrylockfile(FILE *);
void funlockfile(FILE *);
size_t fwrite(const void *restrict, size_t, size_t, FILE *restrict);
int getc(FILE *);
int getchar(void);
int getc_unlocked(FILE *);
int getchar_unlocked(void);
char *gets(char *);
int pclose(FILE *);
void perror(const char *);
FILE *popen(const char *, const char *);
int printf(const char *restrict, ...);
int putc(int, FILE *);
int putchar(int);
int putc_unlocked(int, FILE *);
int putchar_unlocked(int);
int puts(const char *);
int remove(const char *);
int rename(const char *, const char *);
void rewind(FILE *);
int scanf(const char *restrict, ...);
void setbuf(FILE *restrict, char *restrict);
int setvbuf(FILE *restrict, char *restrict, int, size_t);
int snprintf(char *restrict, size_t, const char *restrict, ...);
int sprintf(char *restrict, const char *restrict, ...);
int sscanf(const char *restrict, const char *restrict, int ...);
char *tempnam(const char *, const char *);
FILE *tmpfile(void);
char *tmpnam(char *);
int ungetc(int, FILE *);
int vfprintf(FILE *restrict, const char *restrict, va_list);
int vfscanf(FILE *restrict, const char *restrict, va_list);
int vprintf(const char *restrict, va_list);
int vscanf(const char *restrict, va_list);
int vsnprintf(char *restrict, size_t, const char *restrict, va_list;
int vsprintf(char *restrict, const char *restrict, va_list);
int vsscanf(const char *restrict, const char *restrict, va_list arg);
Inclusion of the
<stdio.h> header may also make visible all symbols
from
<stddef.h>.
The following sections are informative.
None.
None.
None.
<stdarg.h> ,
<stddef.h> ,
<sys/types.h> ,
the System Interfaces volume of IEEE Std 1003.1-2001,
clearerr(),
ctermid(),
fclose(),
fdopen(),
fgetc(),
fgetpos(),
ferror(),
feof(),
fflush(),
fgets(),
fileno(),
flockfile(),
fopen(),
fputc(),
fputs(),
fread(),
freopen(),
fseek(),
fsetpos(),
ftell(),
fwrite(),
getc(),
getc_unlocked(),
getwchar(),
getchar(),
getopt(),
gets(),
pclose(),
perror(),
popen(),
printf(),
putc(),
putchar(),
puts(),
putwchar(),
remove(),
rename(),
rewind(),
scanf(),
setbuf(),
setvbuf(),
sscanf(),
stdin,
system(),
tempnam(),
tmpfile(),
tmpnam(),
ungetc(),
vfscanf(),
vscanf(),
vprintf(),
vsscanf()
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
