The following programs demonstrate the use of the MODIFY
    statement with a host variable. These programs:

    o  Declare a host variable, badge, with the same data type and
       attributes as EMPLOYEES.EMPLOYEE_ID

    o  Prompt for a value for badge

    o  Change the status code for the employee with the specified
       badge

    The C program uses the read_string function to prompt for and
    receive a value for badge. For more information on read_string,
    see Appendix B of the "RDML Reference Manual".