ATOI(3)                FreeBSD Library Functions Manual                ATOI(3)

NAME
     atoi - convert ASCII string to integer

LIBRARY
     Standard C Library (libc, -lc)

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 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.

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)

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").

HISTORY
     The atoi() function appeared in Version 1 AT&T UNIX.

FreeBSD 13.1-RELEASE-p6          April 1, 2020         FreeBSD 13.1-RELEASE-p6