Programming & Computer Science Answers

short and simple Login system using inheritance (any type of Inheritance) in c++ according to OOP concepts.

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Create the Animal class, which is the abstract superclass of all animals

-Declare a protected integer attribute called legs, which records the number of legs for this animal.

-Define a protected constructor that initializes the legs attribute.

-Declare an abstract method eat.

-Declare a concrete method walk that prints out something about how the animals walks (including the number of legs).

2.Create the Spiderclass.

-The Spider class extends the Animal class.

-Define a default constructor that calls the superclass constructor to specify that all spiders have eight legs.

-Implementthe eatmethod.

-Create the Petinterface specified by the UML diagram.

-Create the Cat class that extends Animaland implements Pet.

-This class must include a Stringattribute to store the name of the pet.

1.     An organization has two types of employees: regular and adhoc. Regular employees get a salary which is basic + DA + HRA where DA is 10% of basic and HRA is 30% of basic. Adhoc employees are daily wagers who get a salary which is equal to Number * Wage.

(i)       Define the classes shown in the following class hierarchy diagram:

(ii)     Define the constructors. When a regular employee is created, basic must be a parameter.

(iii)   When adhoc employee is created wage must be a parameter.

(iv)    Define the destructors.

(v)      Define the member functions for each class. The member function days ( ) updates number of the Adhoc employee.

(vi)    Write a test program to test the classes.

    An electricity board charges the following rates to domestic users to discourage large consumption of energy.

·                    For the first 100 units − 50 P per unit

·        Beyond 100 units − 60 P per unit

If the total cost is more than Rs.250.00 then an additional surcharge of 15% is added on the difference. Define a class Electricity in which the function Bill computes the cost. Define a derived class More_Electricity and override Bill to add the surcharge.

Create a Weather forecast application that retrieves data, process the data and visulaises the data on the forms of gui. The data is stored in a MySQL database. Temperature, relative humidity and pressure are recorded every ten minutes. The measurements are uploaded to the database and the date and time of successful upload are logged at the database end. The recorded time is therefore the time of storage. It may differ marginally from the actual measurement time.