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atol
====

Syntax
------

     #include <stdlib.h>
     
     long atol(const char *string);

Description
-----------

Convert as much of the string as possible to an equivalent long integer
value.

This function is almost like `strtol(string, NULL, 10)' (*note
strtol::.).

Return Value
------------

The equivalent value, or zero if the string does not represent a number.

Example
-------

     main(int argc, char **argv)
     {
       long l = atol(argv[1]);
       ...