C++ Programming - OOPS Concepts - Discussion

The default object is constructor.

The dynamic constructor is not in this? Why?

C++ have only three type of constructor:

1. Copy constructor.

2. Default constructor.

3. Parameter constructor.

Constructors are used to initialize the object whereas friend function is used to access the private data member of the classes.

Any other constructors?

Total three types of constructor is there.

Only three type of constructor are, friend is a special member function, so it is a right answer.

1. Constructor.

2. Copy constructor.

3. Default constructor.

4. Parameterized constructor, only three type of constructor also friend is a special member function are there.

There are three types of constructors:

1. Default constructor -->no parameter.

2. Parameterised constructor-->having parameters like arguments of a function.object is declared with blues for that arguments.

3. Copy constructor-->invoked when an object is copied to another object.

classname ob1;
ob2=ob1; /*copy constructor called*/

When an object is passed by value to a function then also copy constructor is invoked.

Note--> Array of objects can never be created without default constructor. If two default constructors are there i mean first having no argument and second having default argument then error will generated while creating array of objects.

So it is desirable to declare only one default constructor while creating array of objects.

Friend constructors are not possible because this is the function not a class which is used for accessing private data and member variables outside class.