Standard library header <cstdio>
From cppreference.com
This header was originally in the C standard library as <stdio.h>
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This header is part of the C-style input/output library.
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[edit] Types
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 |
unsigned integer type returned by the sizeof operator (typedef) |
[edit] Macros
implementation-defined null pointer constant (macro constant) |
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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) |
[edit] Functions
File access |
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opens a file (function) |
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open an existing stream with a different name (function) |
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closes a file (function) |
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synchronizes an output stream with the actual file (function) |
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sets the buffer for a file stream (function) |
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sets the buffer and its size for a file stream (function) |
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Direct input/output |
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reads from a file (function) |
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writes to a file (function) |
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Unformatted input/output |
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Narrow character |
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gets a character from a file stream (function) |
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gets a character string from a file stream (function) |
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writes a character to a file stream (function) |
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writes a character string to a file stream (function) |
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reads a character from stdin (function) |
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(until C++14)
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reads a character string from stdin (function) |
writes a character to stdout (function) |
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writes a character string to stdout (function) |
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puts a character back into a file stream (function) |
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Formatted input/output |
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Narrow/multibyte character |
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reads formatted input from stdin, a file stream or a buffer (function) |
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(C++11)(C++11)(C++11)
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reads formatted input from stdin, a file stream or a buffer using variable argument list (function) |
(C++11)
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prints formatted output to stdout, a file stream or a buffer (function) |
(C++11)
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prints formatted output to stdout, a file stream or a buffer using variable argument list (function) |
File positioning |
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returns the current file position indicator (function) |
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gets the file position indicator (function) |
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moves the file position indicator to a specific location in a file (function) |
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moves the file position indicator to a specific location in a file (function) |
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moves the file position indicator to the beginning in a file (function) |
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Error handling |
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clears errors (function) |
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checks for the end-of-file (function) |
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checks for a file error (function) |
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displays a character string corresponding of the current error to stderr (function) |
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Operations on files |
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erases a file (function) |
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renames a file (function) |
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creates and opens a temporary, auto-removing file (function) |
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returns a unique filename (function) |