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strtoll
=======

Syntax
------

     #include <stdlib.h>
     
     long long strtoll(const char *s, char **endp, int base);

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

This function converts as much of S as looks like an appropriate number
into the value of that number, and sets *ENDP to point to the first
unused character.

The BASE argument indicates what base the digits (or letters) should be
treated as.  If BASE is zero, the base is determined by looking for
`0x', `0X', or `0' as the first part of the string, and sets the base
used to 16, 16, or 8 if it finds one.  The default base is 10 if none
of those prefixes are found.

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

The value.

Example
-------

     printf("Enter a number: "); fflush(stdout);
     gets(buf);
     char *bp;
     printf("The value is %lld\n", strtoll(buf, &bp, 0));