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atoi(3)

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RocketLink!--> Man page versions: OpenBSD FreeBSD RedHat Others

[ANSI C X3.159-1989]

ATOI(3)                   OpenBSD Programmer's Manual                  ATOI(3)

NAME
     atoi - 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);

CAVEATS
     atoi does no overflow checking, handles unsigned numbers poorly, and han-
     dles strings containing trailing extra characters (like ``123abc'') poor-
     ly.  Careful use of strtol(3) and strtoul(3) can alleviate these prob-
     lems.

SEE ALSO
     atof(3),  atol(3),  strtod(3),  strtol(3),  strtoul(3)

STANDARDS
     The atoi() function conforms to ANSI X3.159-1989 (``ANSI C'').

OpenBSD 2.6                      June 4, 1993                                1

Source: OpenBSD 2.6 man pages. Copyright: Portions are copyrighted by BERKELEY
SOFTWARE DESIGN, INC., The Regents of the University of California, Massachusetts
Institute of Technology, Free Software Foundation, FreeBSD Inc., and others.



(Corrections, notes, and links courtesy of RocketAware.com)


[Detailed Topics]
FreeBSD Sources for atoi(3) functions
OpenBSD sources for atoi(3)


[Overview Topics]

Up to: String-Integer-String conversions - Converting strings to and from integers. ascii to long, long to ascii, etc.


RocketLink!--> Man page versions: OpenBSD FreeBSD RedHat Others

[ANSI C X3.159-1989]




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