C++

Question 1.

What is the correct value to return to the operating system upon the successful completion of a program?
A. -1
B. 1
C. 0
D. Programs do not return a value.

Question 2.

What is the only function all C++ programs must contain?
A. start()
B. system()
C. main()
D. program()

Question 3.

What punctuation is used to signal the beginning and end of code blocks?
A. { }
B. -> and <-
C. BEGIN and END
D. ( and )

Question 4.

What punctuation ends most lines of C++ code?
A. . (dot)
B. ; (semi-colon)
C. : (colon)
D. ' (single quote)

Question 5.

Which of the following is a correct comment?
A. */ Comments */
B. ** Comment **
C. /* Comment */
D. { Comment }

Question 6.

Which of the following is not a correct variable type?
A. float
B. real
C. int
D. double

Question 7.

Which of the following is the correct operator to compare two variables?
A. :=
B. =
C. equal
D. ==

Question 8.

Which of the following is true?
A. 1
B. 66
C. .1
D. -1
E. All of the above

Question 9.

Which of the following is the boolean operator for logical-and?
A. &
B. &&
C. |
D. |&

Question 10.

Evaluate !(1 && !(0 || 1)).
A. True
B. False
C. Unevaluatable

Question 11

Identify the correct statement

a. Programmer can use comments to include short explanations within the source code itself.

b. All lines beginning with two slash signs are considered comments.

c. Comments very important effect on the behaviour of the program

d. both

Question 12

The directives for the preprocessors begin with

a.    Ampersand symbol (&)

b.    Two Slashes (//)

c.    Number Sign (#)

d.    Less than symbol (<)

Question 13

The file iostream includes

a.    The declarations of the basic standard input-output library.

b.    The streams of includes and outputs of program effect.

c.    Both of these

d.    None of these

Question 14

There is a unique function in C++ program by where all C++ programs start their execution

a.    Start()

b.    Begin()

c.    Main()

d.    Output()

Question 15

Every function in C++ are followed by

a.    Parameters

b.    Parenthesis

c.    Curly braces

d.    None of these

Question 16

Which of the following is false?

a.    Cout represents the standard output stream in c++.

b.    Cout is declared in the iostream standard file

c.    Cout is declared within the std namespace

d.    None of above

Question 17

Every statement in C++ program should end with

a.    A full stop (.)

b.    A Comma (,)

c.    A Semicolon (;)

d.    A colon (:)

Question 18

Which of the following statement is true about preprocessor directives?

a.    These are lines read and processed by the preprocessor

b.    They do not produce any code by themselves

c.    These must be written on their own line

d.    They end with a semicolon

Question 19

A block comment can be written by

a.    Starting every line with double slashes (//)

b.    Starting  with /* and ending with */

c.    Starting with //* and ending with *//

d.    Starting with <!- and ending with -!>

Question 20

When writing comments you can

a.    Use code and  /* comment on the same line

b.    Use code and // comments on the same line

c.    Use code and //* comments on the same line

d.    Use code and <!- comments on the same line

Answers:

1. C. 0

2. C. main()

3. A. { }

4. B. ;

5. C. /* Comment */

6. B. real

7. D. ==

8. E. All of the above

9. B. &&

10. A. True

11.    b.  All lines beginning with two slash signs are considered comments.

12.    c. Number Sign (#)

13.    a. The declarations of the basic standard input-output library.

14.    c. Main()

15.    b. Parenthesis

16.    d. None of above

17.    c. A semicolon

18.    d. They end with a semicolon

19.    b. Starting  with /* and ending with */

20.    b. Use code and // comments on the same line