Common Programming Errors Quiz

Common syntax error in coding include

• Spelling errors.

• Missing/wrong type of brackets.

• Missing semicolons at the end of lines.

• All of the above.

Refer to the segment of coding below int sensorValue1 = 0 int sensorValue2 = 0 Correct the syntax error that is stopping the program from working.

• Insert brackets.

• Correct spelling errors.

• Change the data type used.

• Add semicolons at the end of lines.

The segment of coding below shows the setup function in a typical Arduino sketch. void setup() { Serial.begin(9600); Serial.print("Temp = "); } Describe the possible display on the serial monitor.

• Serial monitor will display 9600

• Serial monitor will display Temp =

• Serial monitor will display Nonsense

• Serial monitor will not display anything

Figure 4-1 shows the message displayed in the Arduino IDE message window Suggest a possible compiling error with respect to the message displayed

• Syntax error.

• The baud rate is not set correctly.

• The sketch is not uploaded successfully.

• Microcontroller is not connected to the computer.

The segment of coding below shows the loop function in the “blink” sketch. void loop() { digitalwrite(LED_BUILTIN, HIGH); delay(1000); digitalwrite(LED_BUILTIN, LOW); delay(500); } Will the build-in LED blink? Why?

• Yes. The LED will Blink, there is no compiling error.

• No. Because the delay in line 5, (500) is not applicable.

• No. Because there are syntax error on line 2 and line 4.

• No. Because there are spelling mistakes in line 2 and 4.

When initiating the Serial monitor in code, its baud rate has to be set a ..

• to 9600.

• Less than 9600.

• more than 9600.

• to the same value as the value in the code.

The complete sketch of the “blink” program is shown below.

void setup() {

pinMode(LED_BUILTIN, OUTPUT); }

void loop()

digitalWrite(LED_BUILTIN, 1);

delay(1000);

digitalWrite(LED_BUILTIN, 0);

delay(1000);

}

Suggest a possible compiling error that is preventing the sketch from uploading successfully.

• Missing bracket in the sketch.

• Syntax error for delay() function.

• Syntax error for pinMode() function.

• Syntax error for digitalWrite() function.

Figure 4-1 shows the message displayed in the Arduino IDE message window Suggest a possible compiling error with respect to the message displayed

• Microcontroller was defective.

• The wrong serial port was selected.

• Microcontroller is not connected to the computer.

• All of the above.

The Arduino function to detect digital input is

• digitalread

• digitalRead

• digitalwrite

• digitalWrite

Which of the segment coding below declare pushbutton as input in the “Pushbutton” sketch.

/*

Pushbutton sketch

a switch connected to pin 2 lights the LED on pin 13

*/

const int ledPin = 13;

const int inputPin = 2;

void setup() {

pinMode(ledPin, OUTPUT);

pinMode(inputPin, INPUT);

}

void loop(){

• const int ledPin = 13;

• const int inputPin = 2;

• pinMode(ledPin, OUTPUT);

• pinMode(inputPin, INPUT;