Something like this?
void loop()
{
long var = ultrasonic.Ranging(CM);
if (var >= 10)
{
digitalWrite(alarmPin, HIGH);
}
else
{
digitalWrite(alarmPin, LOW);
}
if (var < 10 && var > 5)
{
digitalWrite(alarm2Pin, HIGH);
}
else
{
digitalWrite(alarm2Pin, LOW);
}
Serial.print(ultrasonic.Ranging(CM)); // CM or INC
Serial.println(" cm" );
delay(100);
}