Chapter 8

Question 1

Is public member functions, the interface of class

Answer 1

Yes

Question 2

What is the purpose of scope resolution operator

Answer 2

If we declare function inside class and define it outside class then we use scope resolution operator. it’s symbol is ::

Question 3

What is inline function

Answer 3

Inline function is fastly executed. If we define a function inside class, its default semantic is inline. Keyword ‘inline’ is used to request compiler to make a function inline. e.g.
inline int Area() {
…
}

Question 4

What is constructor

Answer 4

Constructor is used to initialized the objects of class. Constructor is automatically called when the object is created. It does not have return type.

Question 5

What is default constructor

Answer 5

Such a constructor that do not have parameters is called default constructor.

Question 6

What is overloaded constructor

Answer 6

Constructor can have parameters and it is called constructor overloading.

Question 7

What is copy constructor

Answer 7

The copy constructor is a constructor which creates an object by initializing it with an object of the same class, which has been created previously. e.g.
class Line {
   public:
      int getLength( void );
      Line( int len );             // simple constructor
      Line( const Line &obj);  // copy constructor
      ~Line();                     // destructor

private:
…
};

Question 8

What is shallow copy

Answer 8

Copying constructor is called shallow copy