Interfacing NodeMCU and distance sensor(HC-SR04)

int trig=D6
int echo=D5
float duration,dist_cm,dist_in
void setup(){
	pinMode(trig,OUTPUT)
	pinMode(echo,INPUT)
	Serial.begin(9600)
}
Void loop(){
	digitalWrite(trig,LOW);
	delay Microseconds(2);
	digitalWrite(trig,HIGH);
	delay Microseconds(10);
	digitalWrite(trig,LOW);
	duration=pulseIn(echo,HIGH);
	dist_cm=duration*0.0343/2.0;
	dist_in=duration*0.0135/2.0;
	Serial.print(“Distance”);
	Serial.print(dist_cm,1);
	Serial.print(“cm/ ”);
	Serial.print(dist_in,1);
	delay(300);
}