Polymorphism in C++

What will be the output of this piece of code?

• 5500.263

• 500.2635

• 500.263

• 500.266

What will be the output of this piece of code?

• print derived class

  show base class

• print derived class

  show derived class

• Error

Which of the following is invalid prototype for function overloading

• (A) void fun (int x); void fun (char ch) ;

• (B) void fun (int x); void fun (int y);

• (C) void fun (double d); void fun (char ch);

• (D) void fun (double d); void fun (int y);

How do you declare a pure virtual function in C++?

• virtual void func() = 0;

• void func() = 0;

• void func();

• virtual void func();

What happens if a derived class does not override a virtual function?

• The derived class will have a compilation error.

• The base class function will be called.

• The derived class will call its own function.

• None of the above.

What is the output of the following code?

• Base Display

• Derived Display

• Compilation Error

• Runtime Error

Which of the following is a correct way to implement polymorphism?

• Using function overloading.

• Using operator overloading.

• Using virtual functions.

• All of the above.

Which of the following best describes dynamic polymorphism?

• It occurs at compile-time.

• It is achieved through virtual functions and inheritance.

• It is the same as function overloading.

• None of the above.

Which of the following statements is true about overriding a function?

• The function signature must be identical.

• The return type can be different.

• It can only be done in the same class.

• None of the above.

Which of the following statements about virtual functions is true?

• They can be static.

• They cannot be overridden.

• They must be defined in the base class.

• They are always inlined.