получить строку из стандартного ввода (УСТАРЕЛО) (get a string from standard input (DEPRECATED))
Имя (Name)
gets - get a string from standard input (DEPRECATED)
Синопсис (Synopsis)
#include <stdio.h>
char *gets(char *s);
Описание (Description)
Never use this function.
gets() reads a line from stdin into the buffer pointed to by s
until either a terminating newline or EOF, which it replaces with
a null byte ('\0'). No check for buffer overrun is performed
(see BUGS below).
Возвращаемое значение (Return value)
gets() returns s on success, and NULL on error or when end of
file occurs while no characters have been read. However, given
the lack of buffer overrun checking, there can be no guarantees
that the function will even return.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│gets() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
C89, C99, POSIX.1-2001.
LSB deprecates gets(). POSIX.1-2008 marks gets() obsolescent.
ISO C11 removes the specification of gets() from the C language,
and since version 2.16, glibc header files don't expose the
function declaration if the _ISOC11_SOURCE feature test macro is
defined.
Ошибки (баги) (Bugs)
Never use gets(). Because it is impossible to tell without
knowing the data in advance how many characters gets() will read,
and because gets() will continue to store characters past the end
of the buffer, it is extremely dangerous to use. It has been
used to break computer security. Use fgets() instead.
For more information, see CWE-242 (aka "Use of Inherently
Dangerous Function") at
http://cwe.mitre.org/data/definitions/242.html
Смотри также (See also)
read(2), write(2), ferror(3), fgetc(3), fgets(3), fgetwc(3),
fgetws(3), fopen(3), fread(3), fseek(3), getline(3), getwchar(3),
puts(3), scanf(3), ungetwc(3), unlocked_stdio(3),
feature_test_macros(7)
