|ATOI(3)||Library Functions Manual||ATOI(3)|
atoi() function converts the initial portion of the string pointed to by nptr to
It is equivalent to:
(int)strtol(nptr, (char **)NULL, 10);
atoi() function conforms to ANSI X3.159-1989 (“ANSI C89”).
atoi() function first appeared in Version 1 AT&T UNIX.
atoidoes no overflow checking, handles unsigned numbers poorly, and handles 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.
|September 10, 2015||OpenBSD-current|