Free Test Concepts of inheritanc... – C++ Lan...

Q1: What is multiple inheritance in C++?

A. A class inherits from more than one base class B. A class inherits from a single base class C. A class cannot inherit D. A class inherits from derived classes

Q2: Which syntax correctly represents multiple inheritance?

A. class Derived : public Base1, public Base2 {}; B. class Derived : public Base1 {}; C. class Derived {}; D. class Base1 : public Derived {};

Q3: What is the major problem caused by multiple inheritance?

A. Diamond problem B. Memory leak C. Stack overflow D. Compile-time error

Q4: How can the diamond problem be resolved in C++?

A. Using virtual inheritance B. Using friend classes C. Using pointers D. Using multiple constructors

Q5: If both base classes have a function with the same name, how can derived class call them?

A. Using scope resolution operator with base class name B. Using friend function C. Using operator overloading D. It is not possible

Q6: Which of the following is NOT a type of inheritance in C++?

A. Recursive inheritance B. Single inheritance C. Multiple inheritance D. Hierarchical inheritance

Q7: In multiple inheritance, which constructor is called first?

A. Base class constructors in the order they appear in derived class declaration B. Derived class constructor C. Random base class constructor D. No constructor is called

Q8: Can virtual inheritance be used in single inheritance?

A. Yes, but not necessary B. No, only for multiple inheritance C. Only for private inheritance D. Only for public inheritance

Q9: Which keyword is used to declare virtual inheritance?

A. virtual B. override C. final D. static

Q10: When a derived class inherits virtually, how many copies of the virtual base class are there?

A. One B. Two C. None D. Depends on compiler

Q11: What is the main advantage of virtual inheritance?

A. Avoids duplication of base class data B. Improves performance C. Makes functions inline D. Prevents dynamic binding

Q12: Which of the following best describes hierarchical inheritance?

A. One base class, multiple derived classes B. Multiple base classes, one derived class C. One derived class, one base class D. No inheritance

Q13: In multiple inheritance, if both base classes have a member variable with the same name, how to access them?

A. Using base class names with scope resolution operator B. Cannot access them C. Only one is accessible D. Using friend functions

Q14: Which inheritance type is a combination of multiple and multilevel inheritance?

A. Hybrid inheritance B. Single inheritance C. Hierarchical inheritance D. Multiple inheritance

Q15: Is it mandatory for a derived class to call the base class constructor?

A. Yes, to initialize base part B. No, base constructor is not called C. Only for virtual functions D. Only for private members

Q16: Can constructors be inherited in multiple inheritance?

A. No, but can be called explicitly B. Yes, automatically C. Only for virtual inheritance D. Only if base class is abstract

Q17: How is ambiguity resolved when both base classes have same function signature?

A. Using scope resolution operator B. Using friend function C. Using virtual destructor D. Using inline function

Q18: Does C++ support multiple inheritance for classes?

A. Yes B. No C. Only for structs D. Only in C++20

Q19: Can multiple inheritance lead to increased complexity?

A. Yes B. No C. Only in single inheritance D. Only in private inheritance

Q20: Which inheritance type uses virtual base classes?

A. Multiple inheritance B. Single inheritance C. Hierarchical inheritance D. Multilevel inheritance

Quiz for Concepts of inheritance and types of inheritance multiple