NAME
atoi, atoi_l
— convert ASCII string to
integer
LIBRARY
library “libc”
SYNOPSIS
#include
<stdlib.h>
int
atoi(const
char *nptr);
#include
<xlocale.h>
int
atoi_l(const
char *nptr, locale_t
loc);
DESCRIPTION
Theatoi()
function converts the initial portion of the string pointed to by
nptr to int representation.
It is equivalent to:
(int)strtol(nptr, NULL, 10);
The
atoi()
function has been deprecated by
strtol()
and should not be used in new code.
The _l-suffixed version takes an explicit locale argument, whereas the non-suffixed version use the current global or per-thread locale.
ERRORS
The function atoi() need not affect the
value of errno on an error.
SEE ALSO
atof(3), atol(3), strtod(3), strtol(3), strtoul(3), xlocale(3)
STANDARDS
The atoi() function conforms to
IEEE Std 1003.1-1990 (“POSIX.1”),
ISO/IEC 9899:1990 (“ISO C90”),
and ISO/IEC 9899:1999
(“ISO C99”).