Free Test Operator overloading b... – C++ Lan...

Q1: What is operator overloading in C++?

A. Defining new operators B. Changing operator precedence C. Providing custom implementation for existing operators D. Deleting operators

Q2: Which operator cannot be overloaded?

A. new B. :: C. == D. +

Q3: How many operands can an overloaded operator have?

A. Only one B. Only two C. Depends on the operator D. At least three

Q4: Which operator is commonly overloaded as a member function?

A. operator= B. operator+ C. operator<< D. operator,

Q5: What is the return type of operator= typically?

A. void B. Reference to the object C. Integer D. Boolean

Q6: Can operator overloading change the number of operands?

A. No B. Yes C. Only for unary operators D. Only for binary operators

Q7: What does operator++ overloading usually implement?

A. Increment operation B. Addition C. Assignment D. Comparison

Q8: Can operator overloading be done for operators like ?: (ternary)?

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

Q9: What is the syntax for overloading operator+ as a member function?

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

Q10: Which operator can be overloaded to provide custom output formatting?

A. operator<< B. operator>> C. operator== D. operator+=

Q11: What is the main advantage of operator overloading?

A. Simplifies code readability and usability B. Improves runtime performance C. Increases memory usage D. Avoids use of functions

Q12: Is it mandatory to overload operators as member functions?

A. No, can also be non-member B. Yes, always C. Only for assignment operator D. Only for unary operators

Q13: Which operator can be overloaded to delete an object?

A. operator delete B. operator new C. operator free D. operator remove

Q14: What keyword is used for type conversion operators?

A. operator B. convert C. typecast D. cast

Q15: Which of these is a valid user-defined conversion operator?

A. operator int() B. operator convert() C. operator cast() D. operator type()

Q16: Can conversion operators have parameters?

A. No, must be parameterless B. Yes, one parameter C. Yes, two parameters D. Depends on the operator

Q17: What happens if a conversion operator is declared explicit?

A. It prevents implicit conversions B. Allows only implicit conversions C. Causes compile error D. No effect

Q18: Which operator can be overloaded to handle input stream?

A. operator>> B. operator<< C. operator== D. operator+=

Q19: Is it possible to overload the comma operator?

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

Q20: Which of the following operators is overloaded to access members via pointer?

A. operator-> B. operator* C. operator& D. operator.

Quiz for Operator overloading basics