Chapter 21, Problem 21.15E

a.

Program Plan Intro

Program Plan:

• Declare variable xCoordinate and yCoordinate of type int as private member of class.
• Provide declaration of ostream and istream operator as friend function.

Program Description: To create point class having two integer data membersxcoordinate and ycoordinate and provide declaration for stream insertion and stream extraction overloaded operator functions.

b.

Program Plan Intro

Program Plan:

• Define overloaded insertion operator <<. Inside the definition use an if-else statement to check if the failbit was set or not.
• If not then display the value of xCoordinate and yCoordinate data members of point class else display the message that wrong input was entered.
• Also inside the else part use call clear function of clear the failbit.
• Define overloaded extraction operator>>. Inside the definition use ignore function to ignore the first bracket, then read the first interger value , then again use ignore to ignore the comma and extra space, next read the ycoordinatevalue and finally use ignore to skip the last closing bracket.

Program Description: To implement the overloaded insertion and extraction functions of class point in file point.cpp.

c.

Program Plan Intro

Program Plan:

• Include header file point.h
• Declare a variable A of type Point.
• Use cin statement to read the value of point in variable A.
• Use cout statement to display the value of variable A if correct value was entered.

Program Description: To write a driver program to test the Point class.