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ISC Class XII Notes 2019 : Computer Science

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Sagnik Biswas
Delhi Public School (DPS), Newtown, Kolkata

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LAB ASSIGNMENTS OF CLASS XII SL NO. Program Description Date 1 A super class Detail has been defined to store the details of a customer. Define a sub class Bill to compute the monthly telephone charge of the customer as per the chart given below: NUMBER OF CALLS RATE 1- 100 Only rental charge 101-200 60 paisa per call + rental charge 201-300 80 paisa per call + rental charge Above 300 1 rupee per call + rental charge The details of both the classes are given below: Class Name Data members name address telno rent Member functions void show() Class Name Data members n amt customer. Member functions Bill(..) data members of void cal() the charge void show() amount to be paid. : Detail : to store the name of the customer. : to store the address of the customer. : to store the phone number of the customer. : to store the monthly rental charge : Detail(..) : parameterized constructor to assign values to data members. : to display the detail of the customer. : Bill : to store the number of calls. : to store the amount to be paid by the : : parameterized constructor to assign values to both classes and to initialize amt = 0.0. : calculates the monthly telephone charge as per given above. : to display the detail of the customer and Specify the class Detail giving details of the constructor( ) and void show(). Uisng the concept of inheritance, specify the class Bill giving details of the constructor( ), void cal() and void show().

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