C-style file input/output
From cppreference.com
The <cstdio> header provides generic file operation support and supplies functions with narrow character input/output capabilities.
The <cwchar> header supplies functions with wide character input/output capabilities.
Contents |
[edit] Functions
File access | |
opens a file (function) | |
open an existing stream with a different name (function) | |
closes a file (function) | |
synchronizes an output stream with the actual file (function) | |
switches a file stream between wide character I/O and narrow character I/O (function) | |
sets the buffer for a file stream (function) | |
sets the buffer and its size for a file stream (function) | |
Direct input/output | |
reads from a file (function) | |
writes to a file (function) | |
Unformatted input/output | |
Narrow character | |
gets a character from a file stream (function) | |
gets a character string from a file stream (function) | |
writes a character to a file stream (function) | |
writes a character string to a file stream (function) | |
reads a character from stdin (function) | |
reads a character string from stdin (function) | |
writes a character to stdout (function) | |
writes a character string to stdout (function) | |
puts a character back into a file stream (function) | |
Wide character | |
gets a wide character from a file stream (function) | |
gets a wide string from a file stream (function) | |
writes a wide character to a file stream (function) | |
writes a wide string to a file stream (function) | |
reads a wide character from stdin (function) | |
writes a wide character to stdout (function) | |
puts a wide character back into a file stream (function) | |
Formatted input/output | |
Narrow character | |
reads formatted input from stdin, a file stream or a buffer (function) | |
(C++11) (C++11) (C++11) |
reads formatted input from stdin, a file stream or a buffer using variable argument list (function) |
(C++11) |
prints formatted output to stdout, a file stream or a buffer (function) |
prints formatted output to stdout, a file stream or a buffer using variable argument list (function) | |
Wide character | |
reads formatted wide character input from stdin, a file stream or a buffer (function) | |
(C++11) (C++11) (C++11) |
reads formatted wide character input from stdin, a file stream or a buffer using variable argument list (function) |
prints formatted wide character output to stdout, a file stream or a buffer (function) | |
prints formatted wide character output to stdout, a file stream or a buffer using variable argument list (function) | |
File positioning | |
returns the current file position indicator (function) | |
gets the file position indicator (function) | |
moves the file position indicator to a specific location in a file (function) | |
moves the file position indicator to a specific location in a file (function) | |
moves the file position indicator to the beginning in a file (function) | |
Error handling | |
clears errors (function) | |
checks for the end-of-file (function) | |
checks for a file error (function) | |
displays a character string corresponding of the current error to stderr (function) | |
Operations on files | |
erases a file (function) | |
renames a file (function) | |
returns a pointer to a temporary file (function) | |
returns a unique filename (function) |
[edit] Types
Defined in header <cstdio>
| |
Type | Definition |
FILE | type, capable of holding all information needed to control a C I/O stream |
fpos_t | type, capable of uniquely specifying a position in a file |
[edit] Macros
Defined in header <cstdio>
| |
stdin stdout stderr |
expression of type FILE* associated with the input stream expression of type FILE* associated with the output stream expression of type FILE* associated with the error output stream (macro constant) |
EOF |
integer constant expression of type int and negative value (macro constant) |
FOPEN_MAX |
number of files that can be open simultaneously (macro constant) |
FILENAME_MAX |
size needed for an array of char to hold the longest supported file name (macro constant) |
BUFSIZ |
size of the buffer used by std::setbuf (macro constant) |
_IOFBF _IOLBF _IONBF |
argument to std::setbuf indicating fully buffered I/O argument to std::setbuf indicating line buffered I/O argument to std::setbuf indicating unbuffered I/O (macro constant) |
SEEK_SET SEEK_CUR SEEK_END |
argument to std::fseek indicating seeking from beginning of the file argument to std::fseek indicating seeking from the current file position argument to std::fseek indicating seeking from end of the file (macro constant) |
TMP_MAX |
maximum number of unique filenames that can be generated by std::tmpnam (macro constant) |
L_tmpnam |
size needed for an array of char to hold the result of std::tmpnam (macro constant) |