Motor and Potentiometer Code

/*
*Divya Inaganti
*June 19, 2017
*Motor and Potentiometer
*/
#include <Servo.h>
Servo miServito;
const int PotPin= A0;
int PotValue;
int angle;
void setup()
{
pinMode(PotPin, INPUT);
miServito.attach(9);
Serial.begin(9600);

}

void loop() {
  {
 PotValue= analogRead(PotPin);
angle= map(PotValue, 0 , 1023, 0, 179);
angle= constrain(angle, 0, 179);
miServito.write(angle);
miServito.write(0);
delay (500);
miServito.write(45);
delay(500);
miServito.write(90);
delay (500);
miServito.write(135);
delay(500);
miServito.write(180);
delay(500);
}
}