#define in2 2
#define in3 3
#define in4 4
int temp;
int Rh;
int pressure;
int menuChoice;

void setup()
{
  Serial.begin(9600);

  Serial.println("1. Temperature");
  Serial.println("2. Humidity");
  Serial.println("3. Barometric Pressure");

  pinMode(in2, INPUT_PULLUP);
  pinMode(in3, INPUT_PULLUP);
  pinMode(in4, INPUT_PULLUP);
}

void loop()
{
  pb();
  Serial.println("Which sensor would you like to read? ");

  while (Serial.available() == 0)
  {
    menuChoice = Serial.parseInt();
  }

  switch (menuChoice)
  {
    case 1:
      // temp sensor code goes here
      Serial.print("The temperature is: ");
      Serial.println(temp);
      break;

    case 2:
      // humidity sensor code goes here
      Serial.print("The humidity is: ");
      Serial.println(Rh);
      break;

    case 3:
      // pressure sensor code goes here
      Serial.print("The barometric pressure is: ");
      Serial.println(pressure);
      break;

    default:
      Serial.println("Please choose a valid selection");
  }
}
void pb ()
{
  if(digitalRead(in2)==0)
  {
    Serial.print("1");
  }
  else if(digitalRead(in3)==0)
  {
    Serial.print("2");
  }
  else if(digitalRead(in4)==0)
  {
    Serial.print("3");
  }
}