C Programming Examples Online Practice Test - Set 09 - ObjectiveBooks

C Programming Examples Online Practice Test - Set 09

Practice Test: Question Set - 09

1. Local variables ________
    (A) Are created outside a block
    (B) Are known only to that block
    (C) Continue to exist when their block ends
    (D) Are illegal in C++

2. A file pointer always contains the address of the file
    (A) True
    (B) False

3. 6.5 is a _______ constant
    (A) Character literal
    (B) Named literal
    (C) Numeric literal
    (D) String literal

4. A class Stockltems has four data members and three function members. You define 50 objects as members of the class. Which is true?
    (A) Only one copy of each of the tree functions exists
    (B) Only one copy of each of the four data members exists
    (C) Both (a) and (b) are true
    (D) Neither (a) nor (b) is true

5. When a new class is derived from an existing class, the derived class member functions _______ have names that differ from base class function names
    (A) May
    (B) May if the two classes have the same name
    (C) Must
    (D) Must not

6. The program can access the private members of a class
    (A) Directly
    (B) Only through other private members of the class
    (C) Only through other public members of the class
    (D) None of the above - the program cannot access the private members of a class in any way

7. The dot operator (or class member access operator) connects the following two entities (reading from left to right):
    (A) A class member and a class object
    (B) A class object and a class
    (C) A class and a member of that class
    (D) A class object and a member of that class

8. You have declared an integer pointer called point You have also declared an integer called number. Which statement is the correct format?
    (A) point = number;
    (B) point = *number;
    (C) point = &number;
    (D) point = +number;

9. The instructions you enter into the computer are called the ________
    (A) Edited code
    (B) Machine code
    (C) Object code
    (D) Source code

10. In a simple 'if' statement with no 'else'. What happens if the condition following the 'if is false?
    (A) The program searches for the last else in the program
    (B) Nothing
    (C) Control 'falls through' to the statement following 'if
    (D) The body of the statement is executed

11. Compared with the classes from which they are derived, inherited classes may have _______
    (A) Additional data members
    (B) Additional member functions
    (C) Both (a) and (b)
    (D) Neither (a) nor (b)

12. Library header files usually contain
    (A) Complete functions
    (B) Parts of functions
    (C) Function prototypes for functions stored in other files
    (D) Function bodies, but not function headers

13. Which of the following are valid characters constants?
    (A) '\n'
    (B) '\\'
    (C) '\0'
    (D) All of the above

14. A comment
    (A) Is a note that can be put into the source code
    (B) Is ignored by the compiler
    (C) Starts with the /* character pair
    (D) All of the above

15. A variable's _______ indicates how long the variable remains in the computer's memory
    (A) Area
    (B) Extent
    (C) Lifetime
    (D) Scope

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