Time class
Version 1.0

DOCUMENTATION


NEW IN THIS VERSION (compared to the version included in Version 2.1 of the pay calculator): Constant methods.


Each Time object represents a time on a 24-hour clock (0:00 to 23:59).

Methods:

    void initialize()
        Sets receiver to 99:99.
        
    void read(istream & in)
        Reads receiver from in the format h:mm or hh:mm, where each h and m stands for a single digit.  No error-checking.
        
    void print(ostream & out) const
        Prints receiver to out in the format described for read.
    
    double minus(const Time & t2) const
        Computes the difference, in hours, between the receiver and t2.  The difference is positive if the receiver occurs after t2.  In other words, the difference is computed as "t1 - t2".

Implementation notes: Each time is stored as a pair of integers (hours, minutes) by using a class.  The data is private.