ustrtol - Converts a string into an integer. Allegro game programming library.

       This function converts the initial part of `s' to a signed integer, setting `*endp' to point to the first
       unused character, if `endp' is not a NULL pointer. 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. Example:

          char *endp, *string = "456.203 askdfg";
          int number = ustrtol(string, &endp, 10);

       ustrtol - Converts a string into an integer. Allegro game programming library.

       Returns  the  string converted as a value of type `long int'. If nothing was converted, returns zero with
       `*endp' pointing to the beginning of `s'.

uconvert(3alleg4), ustrtod(3alleg4), uatof(3alleg4)

Allegro                                           version 4.4.3                                 ustrtol(3alleg4)

#include<allegro.h>longustrtol(constchar*s,char**endp,intbase);