Mac Developer Library Developer
Search

 

This manual page is part of Xcode Tools version 5.0

To obtain these tools:

If you are running a version of Xcode Tools other than 5.0, view the documentation locally:

  • In Xcode

  • In Terminal, using the man(1) command

Reading manual pages

Manual pages are intended as a quick reference for people who already understand a technology.

  • To learn how the manual is organized or to learn about command syntax, read the manual page for manpages(5).

  • For more information about this technology, look for other documentation in the Apple Developer Library.

  • For general information about writing shell scripts, read Shell Scripting Primer.




ATOI(3)                  BSD Library Functions Manual                  ATOI(3)

NAME
     atoi, atoi_l -- convert ASCII string to integer

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdlib.h>

     int
     atoi(const char *str);

     #include <xlocale.h>

     int
     atoi_l(const char *str, locale_t loc);

DESCRIPTION
     The atoi() function converts the initial portion of the string pointed to by str to int representation.

     It is equivalent to:

           (int)strtol(str, (char **)NULL, 10);

     While the atoi() function uses the current locale, the atoi_l() function may be passed a locale
     directly. See xlocale(3) for more information.

IMPLEMENTATION NOTES
     The atoi() and atoi_l() functions are thread-safe and async-cancel-safe.

     The atoi() and atoi_l() functions have been deprecated by strtol() and strtol_l() 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), xlocale(3)

STANDARDS
     The atoi() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1''), ISO/IEC 9899:1990 (``ISO C90''), and
     ISO/IEC 9899:1999 (``ISO C99'').

BSD                              June 4, 1993                              BSD

Reporting Problems

The way to report a problem with this manual page depends on the type of problem:

Content errors
Report errors in the content of this documentation with the feedback links below.
Bug reports
Report bugs in the functionality of the described tool or API through Bug Reporter.
Formatting problems
Report formatting mistakes in the online version of these pages with the feedback links below.

Feedback