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ATOI
!!!ATOI
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
NOTES
SEE ALSO
----
!!NAME


atoi, atol, atoll, atoq - convert a string to an integer.
!!SYNOPSIS


__#include
__''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 convert 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
____ 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)
----

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Last edited on Tuesday, June 4, 2002 12:24:12 am by "perry"

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