CS 202, Fall 2007


Assignment #4: 10 Points.

Due Date: Thursday, 10/4/07.


(4)  1.	Exercise 9.5.  Also implement complex multiplication, which
	is defined by (a,b)*(c,d) = (ac-bd,ad+bc).  Define your class 
	so the member functions are used as in the following example:

		int main()	// driver to test complex addition
		{ Complex a(1.0,1.0), b(-1.0,1.0), c;
  		  c.add(a,b); c.print(); // c = a + b
		  return 0;
		}

	Test your complex operations by adding, subtracting and multiplying
	the complex numbers (1,1) and (-1,1).  HINT: It is not necessary 
	to overload operators or use 'this' for this problem.**

(3)  2.	Exercise 10.10. Demonstrate that there is no change in the 
	functionality to the clients of the class by running the driver 
	program in Figure 10.20 using the modified Time class.**

(3)  3.	Using class composition, create a new class named TimeDate which 
	contains data members consisting of a Time object from Figure 
	10.1-10.2 and a Date object from Figure 10.10-10.11.  Without 
	modifying the Time and Date classes, create a member function called 
	printTimeDate(), which prints the date and time in the form 
	MM/DD/YYYY HH:MM:SS with time in 24 hour format.  Using member 
	initializer syntax, create a TimeDate constructor.  Test the TimeDate 
	class by writing a driver program which declares and prints a TimeDate 
	object with the default Time and Date values and also by declaring a 
	const TimeDate object named WTC with a date of 9/11/2001 and time 
	of 08:46:00.  Use proper class source code structure according to 
	the program standards discussed in class.**
	

      **For full credit, turn in fully commented program listings,
	including your name and the problem number, and the output
	from test runs exactly as produced by the program.