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 atol()                  Convert String to Long


 #include <stdlib.h>

 long       atol(string);                Value of string, converted to long
 char       *string;                     String to be converted

    atol() converts 'string' to a long integer value. Like atoi(), atol()
    does not recognize either decimal points or exponents.  'string' has
    the following format:

                  [whitespace][sign]digits

               where:
                  whitespace        any number of tab or space characters
                  sign              + or -
                  digits            one or more decimal digits.


    Returns:    The long value of 'string'.  If 'string' cannot be
                converted to a long value, 0L is returned. The return
                value is undefined for overflow.


   -------------------------------- Example ---------------------------------

    The following statements convert a string to a long value and print
    the result.

           #include <stdlib.h>

           long   l;
           char   *s;

           main()
           {
               s = "98765";
               l = atol(s);
               printf("%ld\n",l);
           }