int devision(float a, float b) {
  if (b == 0) {
    return 'Error';
  } else {
    return a / b;
  }
}


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println(devision(50, 2));
}

void loop() {
  // put your main code here, to run repeatedly:

}