C-style file input/output
From cppreference.com
The C I/O subset of the C++ standard library implements C-style stream input/output operations. The <cstdio> header provides generic file operation support and supplies functions with narrow and multibyte character input/output capabilities, and the <cwchar> header provides functions with wide character input/output capabilities.
C streams are denoted by objects of type std::FILE that can only be accessed and manipulated through pointers of type std::FILE*. Each C stream is associated with an external physical device (file, standard input stream, printer, serial port, etc).
Contents |
[edit] Types
| Defined in header
<cstdio> | |
| object type, capable of holding all information needed to control a C I/O stream (typedef) | |
| complete non-array object type, capable of uniquely specifying a position in a file, including its multibyte parse state (typedef) | |
[edit] Predefined standard streams
| Defined in header
<cstdio> | |
| 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) | |
[edit] Functions
| Defined in header
<cstdio> | |
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 | |
Byte/multibyte 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) | |
| (deprecated in C++11)(removed in C++14) |
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 | |
Byte/multibyte 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) |