Getting error writing code in Projects Book -- Spaceship Interface

Projects Programming
1

Hello,
I'm brand new to this and just bought the Starter Kit today.

I have typed in the code for the Spaceship Interface but when I hit Verify or Upload I get the following error: Expected unqualified-id before numeric constant. Line 2 is in yellow and the cursor is flashing at the end of the line. I can't find anything wrong with spelling or syntax.

The following is a copy of my code attempt:

1 int switchState = 0;
2 void setup(){
3 pinMode (3,OUTPUT);
4 pinMode (4,OUTPUT);
5 pinMode (5,OUTPUT);
6 pinMode (2,INPUT);
7}
8 void loop(){
9 switchState = digitalRead(2);
10 // COMMENT EXAMPLE
11 if (switchState == LOW) {
12 // the button is not pressed
13 digitalWrite(3, HIGH); // green led
14 digitalWrite(4, LOW); // red led
15 digitalWrite(5, LOW); // red led
16 }
17 else { // button is pressed
18 digitalWrite(3, LOW);
19 digitalWrite(4, LOW);
20 digitalWrite(5, HIGH);
21 delay(250); wait for a quarter second
22 // toggle the leds
23 digitalWrite(4, HIGH);
24 digitalWrite(5, LOW);
25 delay(250); // wait for a quarter second
26 }
27 } // go back to beginning of loop

Here is a link to the project on the website:

Thanks,
Steve

2

Just noticed an error in line 21. I left out the // for the comment. I have fixed that and I still get the same error as before.

3

Greetings,

Steve51:
The following is a copy of my code attempt:

1 int switchState = 0;
2 void setup(){
3 pinMode (3,OUTPUT);
...

Are you including the numbers on the far left (1, 2, 3)?

4

Yes; ah, should I NOT be?

5

Are you using the Arduino IDE? Did you try to compile the code with the line numbers in the sketch? Get rid of the line numbers and try it.

6

Yep, that was my mistake. Thanks to both of you. I'm a rank beginner at this.

Steve

7

Success! Project works as designed! Thanks again.

8

Steve51:
Thanks to both of you.

You are welcome.

I'm a rank beginner at this.

At some point in time, we all have been. Not even Alan Turing was born knowing how to program.