Chapter 13, Problem 13.15E

Program Plan Intro

Program Plan:

• Make a header file Point.h
• Declare header definition- include necessary header files and then create point class declaration.
• Make stream insertion and stream extraction overloaded function as friend to the class.
• Declare two private integers to store number point as xCoordinate and YCoordinate.
• End point header.

• Create “Point.cpp” file for defining function of header “Point.h”.
• Include all necessary header file and also "point.h" for making point class declared in header file available here.
• Overload the stream insertion operator, to display xCoordinate and YCoordinate.
• Overload the stream extraction operator, to check if input is in form "(x,y)” or not.
• Declare array p to get input from stream, extractx and extracy to extract value of xCoordinate and YCoordinate from the stream.
• Determine the size of stream "p".
• Set initial value of fail to 1.
• Check if first and last character of input is '(' and ')' respectively, if not se fail to 1.
• In the else part. run two loops to get x and y value of point which is seperated by ','.
• Run for loop from position 1 till ',' is found or till counter 'i' reaches size of input 'p'. Which means no ',' is entered, thus wrong input.
• Check if character is digit or not, if not a digit, then set fail=1, else extrcat value in extractx.
• After execution of for loop, check if “fail ==1 (some incorrect input) or i != size (which means no comma found)”. If both cases are false, then use a similar for loop to extract value of y.
• Check if “fail==1” (some wrong input) and set ios::failbit and clear the input.
• If fail is still 0, then put values of extractx and extact y in xCoordinate and YCoordinate respectively.
• Return the input.
• Make "Main.cpp" to write main function, which must include "point.h"
• Declare "p" as object of point class.
• Use cin>>p which itself will call overloaded extraction and check for input.
• Check the rdstate for goodbit, if failbit not set then display point using cout<<p. which will again call insertion overload for display.
• Else error message is displayed.
• Return and exit.

Program Description:

Write a point class, which checks for valid input data by overloading stream insertion and stream extraction operator functions.