Define a class for a type called Counter An object of this type is used to count things. Include a default constructor that sets the counter to zero and a constructor with one argument that sets the counter to the value specified by its argument. Write member functions to increase the value by one (called increment) and decrease the value by one (called decrement ), don't let the value go below 0. Write a member function (print) that prints out the value of the counter. Here's a driver program that you should include to test your class. 39 Bint main() 40 Counter cl; Counter c2(10); 41 42 43 cout « "Ci starts at "; cl.print(); cout < end1; 44 45 46 47 cl.increment(); c1.increment(); 48 49 50 cout << "ci now at ": cl. print(); cout « endl; 51 52 53 54 55 cl - c2; 56 c1.decrement(); 57 58 cout << "ci now at ", cl. print(); cout << endl: return e

Define a class for a type called Counter An object of this type is used to count things. Include a default constructor that sets the counter to zero and a constructor with one argument that sets the counter to the value specified by its argument. Write member functions to increase the value by one (called increment) and decrease the value by one (called decrement ), don't let the value go below 0. Write a member function (print) that prints out the value of the counter. Here's a driver program that you should include to test your class. 39 Bint main() 40 Counter cl; Counter c2(10); 41 42 43 cout « "Ci starts at "; cl.print(); cout < end1; 44 45 46 47 cl.increment(); c1.increment(); 48 49 50 cout << "ci now at ": cl. print(); cout « endl; 51 52 53 54 55 cl - c2; 56 c1.decrement(); 57 58 cout << "ci now at ", cl. print(); cout << endl: return e

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter13: Overloading And Templates

Section: Chapter Questions

Problem 23SA

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Mark the following statements as true or false. The member variables of a class must be of the same type. (1) The member functions of a class must be public. (2) A class can have more than one constructor. (5) A class can have more than one destructor. (5) Both constructors and destructors can have parameters. (5)
In Chapter 10, the class clockType was designed to implement the time of day in a program. Certain applications, in addition to hours, minutes, and seconds, might require you to store the time zone. Derive the class extclockType from the class clockType by adding a member variable to store the time zone. Add the necessary member functions and constructors to make the class functional. Also, write the definitions of the member functions and the constructors. Finally, write a test program to test your class.
Using classes, design an online address book to keep track of the names, addresses, phone numbers, and dates of birth of family members, close friends, and certain business associates. Your program should be able to handle a maximum of 500 entries. Define a class addressType that can store a street address, city, state, and ZIP code. Use the appropriate functions to print and store the address. Also, use constructors to automatically initialize the member variables. Define a class extPersonType using the class personType (as defined in Example 10-10, Chapter 10), the class dateType (as designed in this chapters Programming Exercise 2), and the class addressType. Add a member variable to this class to classify the person as a family member, friend, or business associate. Also, add a member variable to store the phone number. Add (or override) the functions to print and store the appropriate information. Use constructors to automatically initialize the member variables. Define the class addressBookType using the previously defined classes. An object of the type addressBookType should be able to process a maximum of 500 entries. The program should perform the following operations: Load the data into the address book from a disk. Sort the address book by last name. Search for a person by last name. Print the address, phone number, and date of birth (if it exists) of a given person. Print the names of the people whose birthdays are in a given month. Print the names of all the people between two last names. Depending on the users request, print the names of all family members, friends, or business associates.
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A(n) ____________ is one instance or variable of a class.
What is the difference between a friend function of a class and a member function of a class? (3)
Chapter 10 defined the class circleType to implement the basic properties of a circle. (Add the function print to this class to output the radius, area, and circumference of a circle.) Now every cylinder has a base and height, where the base is a circle. Design a class cylinderType that can capture the properties of a cylinder and perform the usual operations on the cylinder. Derive this class from the class circleType designed in Chapter 10. Some of the operations that can be performed on a cylinder are as follows: calculate and print the volume, calculate and print the surface area, set the height, set the radius of the base, and set the center of the base. Also, write a program to test various operations on a cylinder.
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