atoi - phpMan

ATOI(3)                    Linux Programmer’s Manual                   ATOI(3)



NAME
       atoi, atol, atoll, atoq - convert a string to an integer

SYNOPSIS
       #include <stdlib.h>

       int atoi(const char *nptr);
       long atol(const char *nptr);
       long long atoll(const char *nptr);
       long long atoq(const char *nptr);

DESCRIPTION
       The  atoi()  function converts the initial portion of the string pointed to by nptr
       to int.  The behaviour is the same as

              strtol(nptr, (char **)NULL, 10);

       except that atoi() does not detect errors.

       The atol() and atoll() functions behave the same as atoi(), except that  they  con-
       vert  the  initial portion of the string to their return type of long or long long.
       atoq() is an obsolete name for atoll().

RETURN VALUE
       The converted value.

CONFORMING TO
       SVID 3, POSIX.1, BSD 4.3, ISO/IEC 9899.  ISO/IEC 9899:1990 (C89) and POSIX.1  (1996
       edition)  include  the  functions  atoi()  and  atol()  only; C99 adds the function
       atoll().

NOTES
       The non-standard atoq() function is not present in libc 4.6.27 or glibc 2,  but  is
       present  in  libc5  and  libc  4.7 (though only as an inline function in <stdlib.h>
       until libc 5.4.44).  The atoll() function is  present  in  glibc  2  since  version
       2.0.2, but not in libc4 or libc5.

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



GNU                               2000-12-17                           ATOI(3)

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