Section (3) gets
gets — get a string from standard input (DEPRECATED)
Never use this function.
gets() reads a line from
stdin into the buffer pointed to
s until either a
terminating newline or
which it replaces with a null byte (_zsingle_quotesz_ _zsingle_quotesz_). No check for
buffer overrun is performed (see BUGS below).
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
For an explanation of the terms used in this section, see attributes(7).
C89, C99, POSIX.1-2001.
obsolescent. ISO C11 removes the specification of
gets() from the C language, and
since version 2.16, glibc header files don_zsingle_quotesz_t expose the
function declaration if the
_ISOC11_SOURCE feature test macro is
gets(). Because it
is impossible to tell without knowing the data in advance how
read, and because
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
For more information, see CWE-242 (aka Use of Inherently Dangerous Function) at http://cwe.mitre.org/data/definitions/242.html
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Copyright (c) 1993 by Thomas Koenig (ig25rz.uni-karlsruhe.de)
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Modified Wed Jul 28 11:12:07 1993 by Rik Faith (faithcs.unc.edu)
Modified Fri Sep 8 15:48:13 1995 by Andries Brouwer (aebcwi.nl)
Modified 2013-12-31, David Malcolm <dmalcolmredhat.com>
Split gets(3) into its own page; fgetc() et al. move to fgetc(3)