ATOI(3) BSD Programmer's Manual ATOI(3)NAMEatoi - convert ASCII string to integer
SYNOPSIS
#include <stdlib.h>
int
atoi(const char *nptr);
DESCRIPTION
The atoi() function converts the initial portion of the string pointed to
by nptr to integer representation.
It is equivalent to:
(int)strtol(nptr, (char **)NULL, 10);
SEE ALSOatof(3), atol(3), strtod(3), strtol(3), strtonum(3), strtoul(3)STANDARDS
The atoi() function conforms to ANSI X3.159-1989 ("ANSI C").
CAVEATSatoi does no overflow checking, handles unsigned numbers poorly, and han-
dles strings containing trailing extra characters (like "123abc") poorly.
Careful use of strtol(3) and strtoul(3) can alleviate these problems, but
strtonum(3) can be used to convert numbers from strings much more safely
and easily.
MirOS BSD #10-current June 4, 1993 1