LCD display distance of an ultrasonic sensor

#define CUSTOM_SETTINGS
#define INCLUDE_LCD_SHIELD

#include <OneSheeld.h>

const int echoPin1 = 2;
const int trigPin1 = 4;

void setup() {
  // initialize serial communication:
  OneSheeld.begin();
  pinMode(trigPin1, OUTPUT);
  pinMode(echoPin1, INPUT);
  LCD.clear();
}

void loop()
{
 long duration1, distance1;

  digitalWrite(trigPin1, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin1, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin1, LOW);

  duration1 = pulseIn(echoPin1, HIGH);
  // convert the time into a distance1
  distance1 = duration1 / 29 / 2;
  if(distance1 < 10)
  {
    LCD.setCursor(0,0);
    LCD.print(distance1);
    LCD.print("cm");
    LCD.setCursor(0,3);
    LCD.print("   ");
  }
  else if(distance1 < 100)
  {
    LCD.setCursor(0,0);
    LCD.print(distance1);
    LCD.print("cm");
    LCD.setCursor(0,4);
    LCD.print("   ");
  }
}