replacing one char in char array by a random number

Projects Programming
1

hey folks,
this drives me crazy....

i got this coding:

long randNumber;
char beaconName[10] = {'T', 'E', 'S', 'T', '_', '0', '0', '0', '0' };

void setup()
{
	Serial.begin(57600);

	randomSeed(analogRead(0));
	randNumber = random(9);

	beaconName[1] = char(randNumber);
	beaconName[8] = 'X';

}

void loop()
{
	Serial.println(beaconName);
	Serial.println(char(randNumber));
}

The output is then:

TST_000X

What is happening?

2

The second char cannot be printed, so the serial monitor ignores it.

Try:

beaconName[1] = char(randNumber) + '0'

You might have a look at the ASCII Table.

3

thx, that worked!