Free Test Overloading unary and ... – C++ Lan...

Q1: Which operator is a unary operator?

A. + B. == C. && D. +=

Q2: Which operator is a binary operator?

A. ++ B. ! C. && D. ~

Q3: How do you overload a unary operator as a member function?

A. ReturnType operator++(); B. ReturnType operator++(int); C. ReturnType operator++(ReturnType); D. ReturnType operator+(int);

Q4: How do you overload a binary operator as a member function?

A. ReturnType operator+(const ClassName &obj); B. ReturnType operator+(void); C. ReturnType operator+(int); D. ReturnType operator++(int);

Q5: Which operator++ overload is postfix?

A. operator++() B. operator++(int) C. operator++(void) D. operator++(char)

Q6: Which operator++ overload is prefix?

A. operator++() B. operator++(int) C. operator++(void) D. operator++(char)

Q7: What is the correct signature for overloading the unary minus operator as a member function?

A. ReturnType operator-(); B. ReturnType operator-(int); C. ReturnType operator-(void); D. ReturnType operator-(ClassName &);

Q8: Which of these is the correct way to overload binary + operator?

A. ReturnType operator+(const ClassName &obj); B. ReturnType operator+(int); C. ReturnType operator+(void); D. ReturnType operator+(ClassName *);

Q9: When overloading binary operators as non-member functions, how many parameters are required?

A. One B. Two C. None D. Three

Q10: Which operator cannot be overloaded as a non-member function?

A. operator= B. operator+ C. operator== D. operator!=

Q11: Can unary operators be overloaded as non-member functions?

A. Yes B. No C. Only prefix unary operators D. Only postfix unary operators

Q12: Which keyword is used to specify an operator function?

A. operator B. overload C. func D. method

Q13: How to distinguish prefix and postfix operator++ in overloading?

A. Prefix has no parameter, postfix has int parameter B. Prefix has int parameter, postfix has none C. Both have int parameter D. Both have no parameter

Q14: Which of the following is a valid unary operator to overload?

A. operator~ B. operator+ C. operator! D. All of the above

Q15: When overloading operator+, what is typically the operand type?

A. Same class type B. Integer only C. Pointer only D. No parameters

Q16: Is it possible to overload the operator[]?

A. Yes B. No C. Only for arrays D. Only for pointers

Q17: Which operator is overloaded to support function call syntax?

A. operator() B. operator[] C. operator{} D. operator<>

Q18: Can operator overloading change operator precedence?

A. No B. Yes C. Sometimes D. Only for custom operators

Q19: What is the return type for overloaded unary operators usually?

A. Object or reference to object B. void C. int D. bool

Quiz for Overloading unary and binary operators