project2: ERROR: expected unqualified-id before numeric constant

Hello, today is my first day... i supose it's easy but I can't find the error here may code, and the error is in number 8 and the message is: "expected unqualified-id before numeric constant"

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 //funcionarà? 11 if (switchState == LOW) { 12 // el boto no esta apretat 13 digitalWrite(3, HIGH); //verd 14 digitalWrite(4, LOW); //vermell 15 digitalWrite(5, LOW); //vermell 16 } 17 else { //el boto esta apretat 18 digitalWrite(3, LOW); 19 digitalWrite(4, LOW); 20 digitalWrite(5, HIGH); 21 delay(250); // espera un quart de segon 22 //toggle the leds 23 digitalWrite(4, HIGH); 24 digitalWrite(5, LOW); 25 delay(250); // espera un quart de segon 26 } 27 } // torna al principi del loop

thanks a lot!

ok, the think is that I've wrote the numbers...

as the book shows the numbers 1, 2, 3, for each line... I wrote them too...

Thanks for all the answers! :o