Free Test Data members and membe... – C++ Lan...

Q1: What are data members in a class?

A. Variables declared inside a class B. Functions declared inside a class C. Objects of a class D. Access specifiers

Q2: What are member functions in a class?

A. Functions defined inside a class B. Variables declared outside a class C. Objects created from a class D. Global functions

Q3: Can data members be accessed directly outside the class if they are private?

A. No B. Yes C. Only if static D. Only if const

Q4: Which access specifier allows member functions and data members to be accessible anywhere?

A. public B. private C. protected D. friend

Q5: Which keyword is used to declare a member function inside a class?

A. ReturnType FunctionName(); B. func FunctionName(); C. function FunctionName(); D. void FunctionName;

Q6: What is the correct way to define a member function outside the class?

A. ReturnType ClassName::FunctionName() { } B. ClassName.FunctionName() { } C. FunctionName::ClassName() { } D. ReturnType FunctionName() { }

Q7: Can a member function access private data members?

A. Yes B. No C. Only static functions D. Only public functions

Q8: What happens if no member function is defined to access private data?

A. Data cannot be accessed directly outside B. Compiler throws error C. Data becomes public D. Data is deleted

Q9: What are access specifiers?

A. Keywords to set access level of members B. Data types C. Function names D. Variable names

Q10: Which of these is NOT an access specifier?

A. extern B. public C. private D. protected

Q11: Which member function can access the class members using "this" pointer?

A. All non-static member functions B. Static member functions C. Global functions D. Friend functions

Q12: Can static member functions access non-static data members directly?

A. No B. Yes C. Only in constructors D. Only in destructors

Q13: How are static data members shared?

A. Shared by all objects of the class B. Each object has its own copy C. Static data is private by default D. Static data cannot be accessed

Q14: How to call a member function of an object "obj"?

A. obj.FunctionName(); B. FunctionName.obj(); C. obj->FunctionName(); D. *obj.FunctionName();

Q15: What is the default return type of constructor?

A. No return type B. void C. int D. char

Q16: Can member functions be declared inside a class and defined outside?

A. Yes B. No C. Only for static functions D. Only for friend functions

Q17: What is the term for functions that have same name but different parameters?

A. Function overloading B. Function overriding C. Virtual functions D. Inline functions

Q18: How do you declare a constant data member?

A. const int x; B. int const x; C. Both A and B D. static int x;

Q19: Can member functions be declared as const?

A. Yes B. No C. Only static functions D. Only friend functions

Q20: What is encapsulation?

A. Wrapping data and functions into a single unit B. Hiding functions only C. Using global variables D. Inheritance mechanism

Quiz for Data members and member functions