Lesson 4 Quiz: Conditional Statements with Arduino

Test your understanding of `if`, `else`, `else if`, and simple decision-making in Arduino code

32-Lesson Course • Semester 1

Quiz Instructions

This quiz covers material from Lesson 4: Conditional Statements with Arduino
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

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Question 1: What does `if` do?

What is the purpose of an `if` statement in Arduino?

A) It repeats code forever B) It lets the program make a decision based on a condition C) It creates a new variable type D) It only works with LEDs

Question 2: Equality Check

Which operator correctly checks whether two values are equal?

A) `=` B) `==` C) `=>` D) ``

Question 3: `if` / `else`

What happens in an `if` / `else` statement?

A) Both code blocks always run B) Only the `if` block can ever run C) One block runs if the condition is true, the other runs if it is false D) It turns all values into `HIGH`

Question 4: Reading an `else if` chain

In an `else if` chain, what does Arduino do after it finds the first true condition?

A) It keeps running every remaining block too B) It restarts the program immediately C) It runs that block and skips the rest of the chain D) It changes the condition automatically

Question 5: Button Logic

If a button uses `INPUT_PULLUP`, what value does it usually read when the button is pressed?

A) `LOW` B) `HIGH` C) `255` D) `1023`

Question 6: Code Reading

If `int score = 65;` and the code says `if (score >= 70)`, what happens?

A) The condition is true B) The condition is false C) The Arduino stops working D) The condition becomes `HIGH`

Question 7: Comparison Meaning

Which condition means “temperature is greater than 30”?

A) `temperature == 30` B) `temperature < 30` C) `temperature > 30` D) `temperature != 30`

Question 8: Hardware Decision

What does this code do?
if (buttonState == LOW) { digitalWrite(ledPin, HIGH); } else { digitalWrite(ledPin, LOW); }

A) It makes the LED stay on all the time B) It turns the LED on when the button is pressed and off otherwise C) It changes the button into an output D) It blinks the LED three times

Question 9: Explain a Condition

Explain what `if (score >= 90)` means in your own words.

Question 10: Decision-Making Program

Describe a simple Arduino program that uses `if` and `else`. What value or input does it check, and what different actions can happen?

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