int xPosPin = 0;
int yPosPin = 1;
int zPosPin = 8;
int xVal, yVal, zVal;

void setup() {
  // put your setup code here, to run once:
  pinMode(zPosPin, INPUT_PULLUP); // pull-up input (same as INPUT, but puts a high resistance value resistor to VCC behind the port)
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  xVal = analogRead(xPosPin); // read analog value of pin xPin
  yVal = analogRead(yPosPin); // read analog value of pin yPin
  zVal = digitalRead(zPosPin); // read digital value of zPin
  Serial.print("X : ");
  Serial.print(xVal);
  Serial.print(" \tY : ");
  Serial.print(yVal);
  Serial.print(" \tZ : ");
  Serial.println(zVal);
  delay(200); // delay 200 ms
}