#include <math.h>
double temp,data;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
    pinMode(A0,INPUT_ANALOG);
}

void loop() {
  // put your main code here, to run repeatedly:
  temp=(long)analogRead(A0);
  data=(exp(0.0056*temp))*0.467;
  Serial.print("the depth is:");
  Serial.print(data);
  Serial.println("cm");
  delay(500);
}