Topic Wise Solved Problems Question – Computer Sir Ki Class

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02D 4

Answer the questions (i) to (iv) based on the following:

class One
{
  int A1;
protected:
  float A2;
public:
  One();
  void Get1(); void Show1();
};
class Two : private One
{
  int B1;
protected:
  float B2;
public:
  Two();
  void Get2();
  void Show();
};
class Three : public Two
{
  int C1;
public:
  Three();
  void Get3();
  void Show();
};
void main()
{
  Three T;     //Statement 1
  __________________;  //Statement 2
}

(i) Which type of Inheritance out of the following is illustrated in the above example?
-Single Level Inheritance, Multilevel Inheritance, Multiple Inheritance

(ii) Write the names of all the member functions, which are directly accessible by the object T of class Three as declared in main() function.

(iii) Write Statement 2 to call function Show() of class Two from the object T of class Three.

(iv) What will be the order of execution of the constructors, when the object T of class Three is declared inside main()?

CBSE12D-2017

Inherited Function Calling 2

Observe the following C++ code and answer the questions (i) and (ii).
Note : Assume all necessary files are included.

class FIRST
{
  int Num1;
  public:
  void Display() //Member Function 1
  {
    cout<<Num1<<endl;
  }
};
class SECOND: public FIRST
{
  int Num2;
  public:
  void Display() //Member Function 2
  {
    cout<<Num2<<endl;
  }
};
void main()
{
  SECOND S;
  ___________________ //Statement 1
  ___________________ //Statement 2
}

(i) Which Object Oriented Programming feature is illustrated by the definitions of
classes FIRST and SECOND?

(ii) Write Statement 1 and Statement 2 to execute Member Function 1 and Member
Function 2 respectively using the object S.

CBSE12A-2018