#include <Servo.h>
Servo myServo;
int ang = 90;
#define Trig 10 
#define Echo 11
long width, distance; 
void printData()
{
  
  Serial.print("Angle is:");
  Serial.print(ang);
  Serial.print("\n");
}

void setup() 
{
Serial.begin (9600);
pinMode(Trig, OUTPUT);
pinMode(Echo, INPUT);
myServo.attach(12);
  myServo.write(ang);

}

void loop() {
 digitalWrite(Trig, 0); 
delayMicroseconds(2); 
digitalWrite(Trig, 1);
delayMicroseconds(10); 
digitalWrite(Trig, 0);
width = pulseIn(Echo, 1);
distance = width/58.2;
Serial.print(" Distance is: ");
Serial.print(distance);
Serial.println(" cm");
 if (distance<100)
   {
    for(ang=90;ang>=0;ang-=10)
    {
      myServo.write(ang);
      printData();
       delay(500);
    }
   delay (3000);
   
   for(ang=0;ang<=90;ang+=10)
   {
   myServo.write(ang);
   printData();
   delay(500);
   }

 }
  
delay(1000);


}