int echo = 2;
int trig = 3;
int boozer = 13;
int swc = 8;
int value = 0;
void setup(){
  Serial.begin(9600);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(boozer, OUTPUT);
  pinMode(swc, INPUT);
}

int main(){

    value = digitalRead(swc);
    if(value == 0){
        digitalWrite(trig, LOW);
        digitalWrite(echo, LOW);
        delayMicroseconds(2);
        digitalWrite(trig, HIGH);
        delayMicroseconds(10);
        digitalWrite(trig, LOW);
        digitalWrite(boozer, LOW);

        unsigned long duration = pulseIn(echo, HIGH);

      float distance = ((float)(340*duration)/10000)/2;

      Serial.print(distance);
      Serial.println("cm");
      Serial.println(value);

      if(distance <= 10){
        digitalWrite(boozer,HIGH);
        delay(50);
        digitalWrite(boozer, LOW);
      }

      delay(50);
    }
    else{
      digitalWrite(boozer, LOW);
    }
}