Is Ch 1-3 Test C++ Your Forte? Find Out With This Quiz!

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2. Check_Grade

Valid

Invalid

The given correct answer is "Valid". This suggests that the "Check_Grade" is a valid action or function. It implies that the system or program is able to check the grade of something or someone, and this action is considered valid or acceptable within the context of the question or problem.

Explanation

The given correct answer is "Valid". This suggests that the "Check_Grade" is a valid action or function. It implies that the system or program is able to check the grade of something or someone, and this action is considered valid or acceptable within the context of the question or problem.

3. Cpu

Valid

Invalid

not-available-via-ai

Explanation

not-available-via-ai

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6. Sprint.L.L.C

Valid

Invalid

no periods allowed

Explanation

no periods allowed

7. Student-grade

Valid

Invalid

cannot have a dash

Explanation

cannot have a dash

8. Evaluate the following numerical expression. int number; int x = 9, y = 5; float ave = 13.5 number = ( x + y / 3 * 2 ) + ave / x -1 * ave;

number = (x+y / 3*2) + ave / x - 1 * ave;
number = (9+5 / 3*2) + 13.5 / 9 - 1 * 13.5;
number = (9+1*2) + 1.5 - 1 * 13.5;
number = (9+2) + 1.5 - 13.5;
number = (11) - 12.0;
number = - 1.0;
number = -1;

Explanation

number = (x+y / 3*2) + ave / x - 1 * ave;
number = (9+5 / 3*2) + 13.5 / 9 - 1 * 13.5;
number = (9+1*2) + 1.5 - 1 * 13.5;
number = (9+2) + 1.5 - 13.5;
number = (11) - 12.0;
number = - 1.0;
number = -1;

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9. Counter value

Valid

Invalid

no spaces allowed

Explanation

no spaces allowed

10. Evaluate the following logical expressions as true or false: int x=0, y=1; bool value=false; (these values are the same for each expression). (x + y || value && x || !value)

True

False

(x + y || value && x || !value)
(0 + 1 || false && 0 || true)
(1 || false || true)
true

Explanation

(x + y || value && x || !value)
(0 + 1 || false && 0 || true)
(1 || false || true)
true

11. What is wrong with the following code that will assign my first initial to a variable? char initial; initial=M;

The m needs to have ‘’ around it "M".

The m needs to have ‘’ around it ‘M’.

It is fine.

The correct answer is that the m needs to have ‘’ around it ‘M’. In programming, characters need to be enclosed in single quotes ('') to indicate that they are a character literal. Therefore, the correct code should be initial = 'M';

Explanation

The correct answer is that the m needs to have ‘’ around it ‘M’. In programming, characters need to be enclosed in single quotes ('') to indicate that they are a character literal. Therefore, the correct code should be initial = 'M';

12. If the following are valid identifiers, check valid, otherwise check invalid, return

Valid

Invalid

You cannot use keywords in an identifier.

Explanation

You cannot use keywords in an identifier.

13. STUDENTS

Valid

Invalid

The given answer "Valid" suggests that the students mentioned in the context are considered valid or acceptable. However, without any additional information or context provided in the question, it is difficult to determine the specific criteria or conditions for determining the validity of the students.

Explanation

The given answer "Valid" suggests that the students mentioned in the context are considered valid or acceptable. However, without any additional information or context provided in the question, it is difficult to determine the specific criteria or conditions for determining the validity of the students.

14. 2file

Valid

Invalid

Cannot start with a number

Explanation

Cannot start with a number

15. Counter4Data

Valid

Invalid

not-available-via-ai

Explanation

not-available-via-ai

16. Put the steps of the software development cycle in order.

1

2

3

4

5

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17. Evaluate the following logical expressions as true or false: int x=0, y=1; bool value=false; (these values are the same for each expression). (x=0 && y < 5/3 + 3 || value == 0/y)

True

False

(x=0 && y (FALSE && 1 (FALSE && 1 (FALSE || false == 0)
(FALSE || TRUE)
TRUE

Explanation

(x=0 && y (FALSE && 1 (FALSE && 1 (FALSE || false == 0)
(FALSE || TRUE)
TRUE

18.

What is the output of the following code fragment?

int i=20; do { cout << i << i+1 << endl; }while(i > 10);

20 21

10 20 21

20 21 repeating

20 21
20 21
20 21
20 21
20 21
20 21
repeating.

Explanation

20 21
20 21
20 21
20 21
20 21
20 21
repeating.

19. Write only the code necessary to declare a variable that would hold the cost of an automobile. Initialize it with a value of 0;

Int cost = 0;

Double cost = 0;

Cost = 0;

Double = 0;

The correct answer is "double cost = 0;". This is the correct way to declare a variable named "cost" that can hold decimal values (double) and initialize it with a value of 0.

Explanation

The correct answer is "double cost = 0;". This is the correct way to declare a variable named "cost" that can hold decimal values (double) and initialize it with a value of 0.

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