Week 3 Quiz: Variables & Data Types

Test your understanding of variables and data types in Arduino programming

32-Week Course • Semester 1

Quiz Instructions

• This quiz covers material from Week 3: Variables & Data Types
• Answer all questions to the best of your ability
• Your responses will be emailed to your instructor for review
• Take your time and think carefully about each answer
• You can review the lesson material if needed before submitting

Student Information

Full Name

Email Address

Question 1: Variable Declaration

Which of the following correctly declares an integer variable named "count" with an initial value of 10?

A) integer count = 10; B) int count = 10; C) var count = 10; D) count int = 10;

Question 2: Data Types

Which data type is best for storing decimal numbers in Arduino?

A) int B) bool C) float D) char

Question 3: Boolean Values

What are the two possible values for a boolean (bool) data type?

A) 0 and 1 B) true and false C) yes and no D) on and off

Question 4: Variable Scope

Where should global variables be declared in an Arduino program?

A) Inside the setup() function B) Inside the loop() function C) At the top of the program, before setup() and loop() D) At the bottom of the program, after loop()

Question 5: Mathematical Operations

What is the result of the expression: 15 % 4 (modulo operator)?

A) 3 B) 4 C) 11 D) 60

Question 6: String Data Type

How do you declare a String variable containing the text "Arduino"?

A) String message = Arduino; B) String message = "Arduino"; C) string message = "Arduino"; D) text message = "Arduino";

Question 7: Code Analysis

Explain what happens in this code snippet:

int temperature = 25;
temperature = temperature + 5;
Serial.println(temperature);

Question 8: Data Logger Project

Describe the personal data logger you created for the hands-on activity. What data did you choose to track and what calculations did your program perform?

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