Multiple Level of Inheritance

• Classes can be derived from derived classes also. The following segment illustrates this.

  class A
  { };
  class B: public A 	//First level of inheritance
  { };
  class C: public B 	//Second level of inheritance
  { };
  

• Hence B is derived from A and C is derived from B. Now, you have two levels of inheritance.
  Click here for Example
• In the above example, the student class is the base class.
• The marks class is derived from student and forms the first level of inheritance.
• The report class is derived from marks class.
• This forms the second level of inheritance as the report class is derived from marks, which is derived from student.
• The data member mks of marks class is specified as protected because the total is calculated in the reports class.

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