Arguments

 

nptr

   A pointer to the wide-character string to be converted to a long
   integer.
 

endptr

   The address of an object where the function can store a pointer
   to the first unrecognized character encountered in the conversion
   process (the character that follows the last character processed
   in the string being converted). If endptr is a NULL pointer, the
   address of the first unrecognized character is not retained.
 

base

   The value, 2 through 36, to use as the base for the conversion.

   If base is 16, leading zeros after the optional sign are ignored,
   and 0x or 0X is ignored.

   If base is 0, the sequence of characters is interpreted by the
   same rules used to interpret an integer constant. After the
   optional sign:

   o  A leading 0 indicates octal conversion.

   o  A leading 0x or 0X indicates hexadecimal conversion.

   o  Any other combination of leading characters indicates decimal
      conversion.