The learner will review code and answer questions about a switch statement.
Switch Statement Utilizing Character Input
All the flashcards in this set deal with the code below:
int currentPin;
void setup()
{
Serial.begin(9600);
for (currentPin = 0; currentPin < 8; currentPin++)
pinMode(currentPin, OUTPUT);
}
void main()
{
char inByte;
if (Serial.available() > 0)
{
inByte = Serial.read();
switch (inByte)
{
case 'a':
digitalWrite(1, HIGH);
break;
case 'b':
digitalWrite(2, HIGH);
break;
case 'c':
digitalWrite(4, HIGH);
break;
case 'd':
digitalWrite(5, HIGH);
break;
case 'e':
digitalWrite(7, HIGH);
break;
default:
for (currentPin = 0; currentPin < 8; currentPin++)
digitalWrite(currentPin, LOW);
}
}
}
This code is displayed in the image below, which will be on each card, but you may want to make note of it before going on.
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
All the flashcards in this set deal with the code below:
int currentPin;
void setup()
{
Serial.begin(9600);
for (currentPin = 0; currentPin < 8; currentPin++)
pinMode(currentPin, OUTPUT);
}
void main()
{
char inByte;
if (Serial.available() > 0)
{
inByte = Serial.read();
switch (inByte)
{
case 'a':
digitalWrite(1, HIGH);
break;
case 'b':
digitalWrite(2, HIGH);
break;
case 'c':
digitalWrite(4, HIGH);
break;
case 'd':
digitalWrite(5, HIGH);
break;
case 'e':
digitalWrite(7, HIGH);
break;
default:
for (currentPin = 0; currentPin < 8; currentPin++)
digitalWrite(currentPin, LOW);
}
}
}
This code is displayed in the image below, which will be on each card, but you may want to make note of it before going on.
Correct Answer
Got it!
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
All the flashcards in this set deal with the code below:
int currentPin;
void setup()
{
Serial.begin(9600);
for (currentPin = 0; currentPin < 8; currentPin++)
pinMode(currentPin, OUTPUT);
}
void main()
{
char inByte;
if (Serial.available() > 0)
{
inByte = Serial.read();
switch (inByte)
{
case 'a':
digitalWrite(1, HIGH);
break;
case 'b':
digitalWrite(2, HIGH);
break;
case 'c':
digitalWrite(4, HIGH);
break;
case 'd':
digitalWrite(5, HIGH);
break;
case 'e':
digitalWrite(7, HIGH);
break;
default:
for (currentPin = 0; currentPin < 8; currentPin++)
digitalWrite(currentPin, LOW);
}
}
}
This code is displayed in the image below, which will be on each card, but you may want to make note of it before going on.
Your Answer
Correct Answer
Got it!
Question 1 of 10
Switch Statement Utilizing Character Input
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
True or False: All lights will be turned off if the character 'A' is received.
Correct Answer
True
Since Serial.read returns the first byte of information and 'A' is not represented by the same byte as 'a', the switch statement will go to its default case and set all the pins to LOW.
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
True or False: All lights will be turned off if the character 'A' is received.
Your Answer
Correct Answer
True
Since Serial.read returns the first byte of information and 'A' is not represented by the same byte as 'a', the switch statement will go to its default case and set all the pins to LOW.
Question 1 of 10
Switch Statement Utilizing Character Input
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
Which output is set to high if the character 'b' is received?
Correct Answer
2
This is case 'b', so the code under it will be executed, first digitalWrite(2, HIGH); setting output 2 to high, then break; ending the switch statement.
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
Which output is set to high if the character 'b' is received?
Your Answer
Correct Answer
2
This is case 'b', so the code under it will be executed, first digitalWrite(2, HIGH); setting output 2 to high, then break; ending the switch statement.
Question 1 of 10
Switch Statement Utilizing Character Input
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
Will the switch statement be executed if there is no serial input?
Correct Answer
No
The switch statement will only execute if there is actual input, which is what Serial.available() > 0 is checking for.
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
Will the switch statement be executed if there is no serial input?
Your Answer
Correct Answer
No
The switch statement will only execute if there is actual input, which is what Serial.available() > 0 is checking for.
Question 1 of 10
Switch Statement Utilizing Character Input
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
If the input received is 'E', will digital output 7 be turned on?
Correct Answer
No
Since Serial.read returns the first byte of information and 'E' is not represented by the same byte as 'e', the switch statement will go to its default case and set all the pins to LOW.
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
If the input received is 'E', will digital output 7 be turned on?
Your Answer
Correct Answer
No
Since Serial.read returns the first byte of information and 'E' is not represented by the same byte as 'e', the switch statement will go to its default case and set all the pins to LOW.
Question 1 of 10
Switch Statement Utilizing Character Input
True or False: The variable inByte could be of type integer and the program would function the same.
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
True or False: The variable inByte could be of type integer and the program would function the same.
Correct Answer
True
Since Serial.read returns the first byte of information, it will read the inputs and compare them to the cases (as written) the same if inByte is a char variable type or an int variable type.
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
True or False: The variable inByte could be of type integer and the program would function the same.
Your Answer
Correct Answer
True
Since Serial.read returns the first byte of information, it will read the inputs and compare them to the cases (as written) the same if inByte is a char variable type or an int variable type.
Question 1 of 10
Switch Statement Utilizing Character Input
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
What is the scope of the currentPin variable?
Correct Answer
Global
The currentPin variable is declared outside of any of the functions, so it has global scope.
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
What is the scope of the currentPin variable?
Your Answer
Correct Answer
Global
The currentPin variable is declared outside of any of the functions, so it has global scope.
Question 1 of 10
Switch Statement Utilizing Character Input
The decision that determines which output is turned on is based on what?
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
The decision that determines which output is turned on is based on what?
Correct Answer
inByte
The switch command has inByte as its argument, so the value of inByte is what the cases are checked against.
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
The decision that determines which output is turned on is based on what?
Your Answer
Correct Answer
inByte
The switch command has inByte as its argument, so the value of inByte is what the cases are checked against.
Question 1 of 10
Switch Statement Utilizing Character Input
The switch statement is used to handle what?
Question 1 of 10
Switch Statement Utilizing Character Input
Correct!
The switch statement is used to handle what?
Correct Answer
data that is char, Boolean, or integer type
The argument of the switch function needs to be easily comparable using an equality comparison, which limits our options (basically) to those in the correct answer: char, Boolean, and int.
Question 1 of 10
Switch Statement Utilizing Character Input
Incorrect
The switch statement is used to handle what?
Your Answer
Correct Answer
data that is char, Boolean, or integer type
The argument of the switch function needs to be easily comparable using an equality comparison, which limits our options (basically) to those in the correct answer: char, Boolean, and int.
Question 1 of 10
Score
You have answered 5 of 10 questions correctly.
50%
Question 1 of 10
- Author
- Published
- 6/2/2015
- Last Updated
- 6/2/2015
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Switch Statement Utilizing Character Input by Fox Valley Technical College is licensed under a Creative Commons Attribution 3.0 Unported License.