Estimated time

20 minutes

Level of difficulty

Easy

Objectives

• improving the student's skills in operating with multiple inheritance;
• pointing out the nature of multiple inheritance problems.

Scenario

• Your task is to build a multifunction device (MFD) class consisting of methods responsible for document scanning, printing, and sending via fax.
• The methods are delivered by the following classes:
• scan(), delivered by the Scanner class;
• print(), delivered by the Printer class;
• send() and print(), delivered by the Fax class.
• Each method should print a message indicating its purpose and origin, like:
• 'print() method from Printer class'
• 'send() method from Fax class'
• create an MFD_SPF class ('SPF' means 'Scanner', 'Printer', 'Fax'), then instantiate it;
• create an MFD_SFP class ('SFP' means 'Scanner', 'Fax', 'Printer'), then instantiate it;
• on each object call the methods: scan(), print(), send();
• observe the output differences. Was the Printer class utilized each time?