Object Oriented Programming in c++ Code - Set 26 - ObjectiveBooks

Object Oriented Programming in c++ Code - Set 26

Practice Test: Question Set - 26


1. Of the three ways to pass arguments to functions, only passing by _______ and passing by _______ allow the function to modify the argument in the calling program
    (A) Reference, pointer
    (B) Array, location
    (C) Array, pointer
    (D) None of the above

2. When you create a derived class and instantiate on object
    (A) The parent class object must be constructed first
    (B) The child class object must be constructed first
    (C) The parent class object must not be constructed
    (D) The child class object must not be constructed

3. A function that uses variable types is called ________
    (A) Overloaded
    (B) A template function
    (C) A variable function
    (D) A virtual function

4. The _______ mode tells C++ to open a file for input
    (A) add::ios
    (B) in::file
    (C) ios::app
    (D) ios::in

5. The return type for all destructors is
    (A) The class
    (B) Void
    (C) The same as the first data in the class
    (D) None

6. Assume a class Derv that is privately derived from class Base. An object of class Derv located in main() can access
    (A) Public members of Base
    (B) Protected members of Base
    (C) Private members of Base
    (D) Public members of Derv

7. Format flags may be combined using
    (A) The bitwise OR operator (|)
    (B) The logical OR operator (||)
    (C) The bitwise AND operator (&)
    (D) The logical AND operator (&&)

8. In object-oriented terms, an exception may be considered a(n) _______
    (A) Child
    (B) Encapsulation
    (C) Message
    (D) Scalar type

9. The code class Descendant : virtual public Ancestor indicates that
    (A) The members of Ancestor will be included more than once in Descendant
    (B) The members of Ancestor will be included only once in Descendant
    (C) The members of Descendant will be included more than once in Ancestor
    (D) The members of Descendant will be included only once in Ancestor

10. If you design a class that needs special initialization tasks, you will want to design a(n) ________
    (A) Housekeeping routine
    (B) Initialize
    (C) Constructor
    (D) Compiler

11. The delete operator returns ________ to the operating system
    (A) Memory that is no longer needed
    (B) Void
    (C) Recycle bin
    (D) None of the above

12. The statement int num[2][3]={ {1,2}, {3,4}, {5, 6} };
    (A) Assigns a value 2 to num[1][2]
    (B) Assigns a value 4 to num[1][2]
    (C) Gives an error message
    (D) Assigns a value 3 to num[1][2]

13. The #ifndef directive tests to see whether ________
    (A) A class has been defined
    (B) A variable has been given a value
    (C) A class has no variable definitions
    (D) Any objects of the class have been instantiated

14. You have assigned the address of Value to the pointer P, Which statement will display the value stored in Value?
    (A) cout<<P;
    (B) cout<<*Value;
    (C) cout<<&P;
    (D) cout<<*P;

15. If the code and fee arrays are parallel, the fee that corresponds to the code stored in the code[3] element is located in the _______ element
    (A) code[2]
    (B) code[3]
    (C) fee[2]
    (D) fee[3]

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