void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}
#include <NewPing.h>

#define TRIGGER_PIN  13  // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN     12  // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 200 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.

// Defining 1st and last pins for 10 segment LED
int LED_FIRST_PIN = 2;
int LED_LAST_PIN = 11;

// Defining Watertank min max levels in cm
float WT_MAXLEVEL = 10;
float WT_MINLEVEL = 100;
float WT_DEEP = WT_MINLEVEL - WT_MAXLEVEL;


void setup() {
  Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results.
  For (i = LED_FIRST_PIN; i < LED_LAST_PIN; i++) { //Initializing pins for LED
    pinMode (j,OUTPUT);
  }

}

void loop() {
  delay(100);                     // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
  Serial.print("Ping: ");
  Serial.print(sonar.ping_cm()); // Send ping, get distance in cm and print result (0 = outside set distance range)
  Serial.println("cm");



}


void DistancePercent() {
float Distance_cm = sonar.ping_cm();
float Percent = 0;
Percent = (1 - ((Distance_cm - WT_MAXLEVEL) / WT_DEEP)) * 100;
If (Percent > 100) {
  Serial.print("Tank overflow");
  Percent = 100
}
If (Percent < 0){
  Serial.pring("Tank level is too low")
  Percent = 0
}
return Percent
}