.\" Copyright (c) 1990 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" %sccs.include.redist.man%
.\"
.\"	@(#)atoi.3	5.1 (Berkeley) 05/16/90
.\"
.TH ATOI 3 ""
.UC 7
.SH NAME
atoi \- convert ASCII string to integer
.SH SYNOPSIS
.nf
.ft B
#include <stdlib.h>

int
atoi(const char *nptr);
.ft R
.fi
.SH DESCRIPTION
The
.I atoi
function converts the initial portion of the string pointed to by
.I nptr
to
.I integer
representation.
.PP
It is equivalent to:
.sp
.RS
(int)strtol(nptr, (char **)NULL, 10);
.RE
.SH SEE ALSO
atof(3), atol(3), strtod(3), strtol(3), strtoul(3)
.SH STANDARDS
.B Atoi
conforms to ANSI X3.159-1989 (``ANSI C'').