void setup() {
  Serial.begin(9600);
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
  pinMode(A2, INPUT);
}

void loop() {
  Serial.print("A0 = );
  Serial.print(analogRead(A0));
  Serial.print(" A1 = );
  Serial.print(analogRead(A1));
  Serial.print(" A2 = );
  Serial.println(analogRead(A2));
}