PIF-Quiz 4

What is the output of the following code? <br> int x = 5;<br> x = x + 2;<br> Serial.println(x);

• 2
• 7
• 5
• 10

What does the following code do? <br> pinMode(13, OUTPUT);

• Reads the state of digital pin 13
• Sets digital pin 13 to high
• Sets digital pin 13 to low
• Configures digital pin 13 as an output

Which function is used to read the value of an analog pin in Arduino?

• digitalRead()
• analogRead()
• pinMode()
• digitalWrite()

What is the purpose of the delay() function in Arduino?

• To read data from a sensor
• To print output to the serial monitor
• To pause the program execution for a specified time
• To define a function

What is the correct way to declare a constant variable named "LED_PIN" with a value of 9 in Arduino?

• const int LED_PIN = 9;
• int const LED_PIN = 9;
• #define LED_PIN 9
• All of the above

Which operator is used to check if two values are NOT equal in Arduino?

• =
• ==
• !=
• >

What is the purpose of a comment in Arduino code?

• To tell the Arduino what to do
• To make the code look nicer
• To explain the code to humans
• To store data

What is the output of the following code? <br> int x = 10;<br> int y = 5;<br> if (x > y) {<br> Serial.println("x is greater");<br> } <br> else {<br> Serial.println("y is greater");<br> }

• x is greater
• y is greater
• x is less
• y is less

What does the following code do? <br> for (int i = 0; i < 5; i++) {<br> Serial.println(i);<br> }

• Prints the numbers 0 to 4
• Prints the number 5
• Prints the numbers 1 to 5
• Prints the numbers 0 to 5

Which Arduino function is used to send data to the serial monitor?

• print()
• Serial.print()
• Serial.println()
• Both B and C