Learning C# 3.0

Test Your Knowledge: Quiz

Question 12-1. What is operator overloading?

Question 12-2. Are operators implemented as properties, static methods, or instance methods?

Question 12-3. What keyword do you use to overload an operator?

Question 12-4. How does the compiler translate:

Fraction f3 = f2 + f1;

assuming that f2 and f1 are Fraction objects and you have overloaded the + operator for the Fraction class?

Question 12-5. Which of the following overloads are reasonable?

1. Overloading the == operator for a Dog class such that two Dog objects with the same name are equal

2. Overloading the - operator of a Box class such that subtracting one Box object from another produces a new Box object with a volume equal to the difference between the other two Box objects

3. Overloading the -- operator of an Employee class so that the employee’s hours are reduced

4. Overloading the + operator of a BankAccount class to merge the balance of two accounts

Question 12-6. Which of the comparison operators are paired?

Question 12-7. What should you also do if you overload the == operator?

Question 12-8. What is the purpose of the Equals() method?

Question 12-9. What keyword(s) do you use to overload the conversion operators?

Question 12-10. When should you use implicit conversion, and when should you use explicit conversion?