Chapter 8, Problem 12RE

Program Plan Intro

Constructor:

• A constructor is a method which is automatically executed at the time of creation of an object of the class.
• Constructor is used to set the default values or user-defined values when an object is created.
• A constructor has same name as that of the class name.
• A constructor is a public access modifier that does not return any values.
• There are mainly three types of constructors as follows:
  • Default constructor
  • Parameterized constructor
  • Copy constructor
• In most cases, a constructor is used to initialize an object’s fields in the beginning of the program.

Explanation of Solution

Class with no constructor:

“Yes”, we can have a class with no constructors.

 Justification:

• There is no such requirement to write a constructor for a class.
• A class can be written without any constructor.
• The compiler creates a default constructor for the class.
• A default constructor is a constructor that has no arguments...

Explanation of Solution

Class with more than one constructor:

If a class contains more than one constructor, then the constructor which is being called is determined by the compiler depending on the type and number of actual arguments to the formal arguments. If no arguments are mentioned, then the default construction gets called...