Question

Which of the following is true for Destructors in C++ ? Select all that apply!

Select one or more:

a. We can have return value in Destructor function to bring execution results back to main function

b. If we do not write our own destructor in class, compiler creates a default destructor for us.

c. We must write a code to call destructor function when we don't need this object anymore

d. We can have more than one destructor in a class with different parameters

e. We can release dynamically allocated memory or pointer in class in destrutor function

What are the characteristics that recursive functions must have? Select all that apply!

Select one or more:

a. Base conditions that eventually becomes true to stop the recursion

b. Have the same memory usage as corresponding iterative implementation

c. The function calls itself directly

d. Recursive functions must have return values

Answer 1

b. If we do not write our own destructor in class, compiler creates a default destructor for us.

e. We can release dynamically allocated memory or pointer in class in destructor function

Explanation :

• Destructor in C++ will be called automatically whenever no more object is needed.
• Destructor having the same name as class name , it should not return any value and can not be overloaded.

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Question :

Answer :

a. Base conditions that eventually becomes true to stop the recursion

c. The function calls itself directly

d. Recursive functions must have return values

Explanation :

• Base condition in recursive functions needed to stop the recursion and in recursion a function call itself again and again.