gets - get a string from standard input (DEPRECATED)
char *gets(char *s);
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).
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
For an explanation of the terms used in this section, see attributes(7).
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
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
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),
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