Write a C++ program that implements the following class hierarchy. Where there exists a relation of inheritance between Bill and Electricity Bill. Class Bill should have following members Data member Reference_num //for reference number Member functions //to take input of the data members; should be virtual Input () //to display data members of its respective; should be virtual Display () Class Electricity_Bill should have following members Data members Units //for units Per_unit_price //for per unit price Tax //for tax Member functions //to calculate total amount to be paid after deducting tax amount Total_amount() //to take input of the data members of its respective and former class in the hierarchy //; should be virtual Input() //to display data members of its respective and former class in the //hierarchy. This function will call Total_amount() and also display the Total amount of //bill.; should be virtual Display() Total amount of Bill is calculated as (Per_unit_price*Units) - Tax You are required to call the display function and hence display the Electricity_Bill information polymorphically (through base class object). The information to be displayed by the display function of Electricity_Bill includes reference number, units, per unit price, tax and total bill amount to be paid. Output Please enter reference number 346 Please enter units consumed 20 Please enter per unit price 2 Please enter tax amount 10 Reference number 346 Units 20 Tax 10 Per unit price 2 Amount to be paid 30
Write a C++ program that implements the following class hierarchy.
Where there exists a relation of inheritance between Bill and Electricity Bill.
Class Bill should have following members
Data member
Reference_num //for reference number
Member functions
//to take input of the data members; should be virtual
Input ()
//to display data members of its respective; should be virtual
Display ()
Class Electricity_Bill should have following members
Data members
Units //for units
Per_unit_price //for per unit price
Tax //for tax
Member functions
//to calculate total amount to be paid after deducting tax amount
Total_amount()
//to take input of the data members of its respective and former class in the hierarchy //; should be virtual
Input()
//to display data members of its respective and former class in the
//hierarchy. This function will call Total_amount() and also display the Total amount of //bill.; should be virtual
Display()
Total amount of Bill is calculated as
(Per_unit_price*Units) - Tax
You are required to call the display function and hence display the Electricity_Bill information polymorphically (through base class object). The information to be displayed by the display function of Electricity_Bill includes reference number, units, per unit price, tax and total bill amount to be paid.
Output
Please enter reference number 346
Please enter units consumed 20
Please enter per unit price 2
Please enter tax amount 10
Reference number 346
Units 20
Tax 10
Per unit price 2
Amount to be paid 30
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