Or best of all (I think) write a function! eg
you code
//sensor1
Serial.println("");
Serial.print("Sensor1 ");
Serial.print("Humidity: ");
Serial.print(humidity);
Serial.print(" %\t ");
Serial.print("Temperature: ");
Serial.print(temp_c);
Serial.println(" *C");
//sensor2
Serial.print("Sensor2 ");
Serial.print("Humidity: ");
Serial.print(humidity2);
Serial.print(" %\t ");
Serial.print("Temperature: ");
Serial.print(temp_c2);
Serial.print(" *C");
Serial.println("");
//sensor3
Serial.print("Sensor3 ");
Serial.print("Humidity: ");
Serial.print(humidity3);
Serial.print(" %\t ");
Serial.print("Temperature: ");
Serial.print(temp_c3);
Serial.print(" *C");
Serial.println("");
void printHumidity(int sensor,humidity,temp){
Serial.print("Sensor");
Serial.print(sensor);// my addition
then prints for the humidity temp etc
}
When ever you have code which is repeated use a function it is what they where invented for and it reduces the number of bugs you get.
Mark