#define trig 10
#define echo 8

int time;
int distance;
void setup() {


pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
}

void loop() {



digitalWrite(trig, HIGH);

delayMicroseconds(4);

digitalWrite(trig, LOW);
}
time=println(echo,HIGH)
distance = time/2*0.034;
if(distance<200)

digitalWrite(ied, HIGH));
else
digitalWrite(led, LOW);