int trigger=4;
int echo=5;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
 
  pinMode(trigger, OUTPUT);
  pinMode(echo, INPUT);
}

int finding_distance(){
  digitalWrite(trigger, HIGH);
  delay(100);
  digitalWrite(trigger, LOW);
  float a=pulseIn(echo, HIGH);
  return(a*0.034/2);
}
void loop() {
  int distance=finding_distance();
  Serial.println(distance);
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}