1. Variables Choose One 7 points Which one of the following choices is NOT a cor

Question

1. Variables Choose One 7 points Which one of the following choices is NOT a correct way to declare and define a variable that we have discussed in class? O string comicTitle "Spiderman" O int numOfCats 10; O decimal totalCost 4.50 O double milesDriven 350.25; 2. Assignment Operators Choose One 7 points What value would be output after the following code runs? 1 int score 5 +=5; score score-#2 score /#2 score-- 3 7 Console.WriteLine(score) O Not enough information given 3. Arrays Choose One 7 points Given the following code what value would be output? C# 2, 4, 5 }; double[ ] myArray new double()(12, 10, 2 double num1myArray[1] myArray[3]: 3num1myArray[4]; 5 Console.WriteLine(num1): 10 O 12

Explanation / Answer

In order to declare decimal data type variable, we use float or double data types.

2. Answer is score: 3, below is explanation

int score = 5;

score +=5; //this statement written as score = score + 5; initially value of // score is 5, so 5 + //5 is 10.

score -=2; //this statement written as score = score - 2;

//after adding 5 score value is 10, so 10 – 2 is 8.

score /=2; //this statement written as score = score / 2

//after subtracting 2 score value is 8, so 8 / 2 is 4.

score --; //this statement written as score = score – 1

//after dividing by 2score value is 4, so 4 - 1 is 3

3. Answer is num1: 9, below is explanation

double[] myArray new double[]{12, 10, 2, 4, 5};

Above statement declare myArray of type double. In an array index start for 0(zero) and its value is rendered as ,

myArray[0] = 12

myArray[1] = 10

myArray[2] = 2

myArray[3] = 4

myArray[4] = 5

                                double num1 = myArray[1] + myArray[3];

                                                Above statement rendered as num1 = 10 + 4 = 14

                                num1 -= myArray[4];

                                                Above statement rendered as num1 = 14 – 5 = 9

4. Answer is num1: 0 (ZERO), below is the explanation

double num1 = 15%3;

Modulo operator returns value of reminder, so 15 / 3 remainder is 0 (ZERO)

5. Answer is You should have a frozen margarita, below is Explanation

temp = 86;

age = 29;

                                There are four conditions in given example:

6. Answer is X: 12, below is Explanation

While loop fails when counter value is greater than or equal to 4.

                Up to 0 to 4 there are four iterations of while loops as shown below

                Counter = 0, x = 0 + 3 = 3.

                Counter = 1, x = 3 + 3 = 6.

                Counter = 2, x = 6 + 3 = 9.

                Counter = 3, x = 9 + 3 = 12.

7. Answer is This answer is false, as explained below

8. Answer is This answer is true, as explained below

9. Answer is addScore, as explained below

10. Answer is _grade and _gradeArray

11. Answer is _grade: 70

12.Answer is numExams: 5

13. Answer is examScores[3]: 100

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