Unit 1 Practice Quiz

Which of the following is not a primitive data type?

• int

• bool

• Scanner

• double

How are variables stored?

• on the hard drive

• in the processor

• in memory

• they are not stored

What is the value of x after this code runs?

int x = 3;

x = 7;

x = 15;

• 15

• 3

• 7

• 10

What is the proper syntax to initialize a variable called moneyEarned to have the value of 37.9?

• int moneyEarned = 37.9;

• moneyEearned = (double)37.9;

• (double)moneyEarned = 37.9;

• double moneyEarned = 37.9;

What is the result of this expression? (int) (13 + 2 / 4 + 3)

• 2

• 16

• 2.14

• 2.0

What expression returns the 1's place of an integer x?

• x % 100

• x % 10

• x / 10

• x + 1

What is the value of myInteger after this line of code is executed?

int myInteger = (int) 7.9;

• 8

• 7

• 79

• 0

What output will be produced by

System.out.println("One");

System.out.println("Two");

• One Two

• OneTwo

• One

  Two

• Two

  One

Refer to the following code segment:

double myDouble = 1/4;

System.out.println("1 / 4 = " + myDouble);

The output of the code is:

2 / 4 = 0.0

The student wanted the output to be:

2 / 4 = 0.5

Which change to the first line of their code segment would get the student the answer that they wanted?

• int myDouble = 2/4;

• double myDouble = (int) 2/4;

• double myDouble = (double)2/4;

• double myDouble = (int)

  (2.0/4.0)

What is the result of this expression?

4 + 8 * 2 / 4 + 5 % 4

• 9

• 8

• 16

• 0