Why do I get error stating 'generateRandomNumber();' not declared in this scope?

Projects Programming
1

As a nuby I"m trying to duplicate the coin toss program that Purdum has in his book. I am able to run his code using the following:

long randomNumber = 0L;

<void loop() {>
randomNumber = generateRandomNumber();

When I try to duplicate this my program by cutting and pasting it to the same locations I get the error message. Why?

Here's my code:

#define IOPIN12 12
#define IOPIN13 13
int led1 = IOPIN12;
int led2 = IOPIN13;
long randomNumber = 0L;

void setup() {
randomSeed(analogRead(0));
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);

}

void loop() {

long randomNumber = generateRandomNumber(); //This statement is highlighted and i receive error
//saying it's not declared in this scope. But it's in
// the same location as Purdum's.
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
if (randomNumber % 2 == 1) {
digitalWrite(led1, HIGH);

}else {

digitalWrite(led1, LOW);
delay(1000);
}
}

I run all my sketches on 1.0.5, if i try to run this on 1.6 it just says error compiling.

Thanks Bryan

2

Post the COMPLETE code using code tags ("</>" button).

3

Where's the code for generateRandomNumber()?

Also, be sure you read the two posts by Nick Gammon at the top of this Forum for guidelines on posting to the Forum. It will help us help you.