Using Serial With Variables

Up until now, we've just used the serial print functionality to print constant strings, like the following:

  Serial.println("Hello World!");

Serial.print and Serial.println can also take variables as their parameters, like this:

  int my_number=7;
  
  Serial.println(my_number);

This will print out a "7" to the serial monitor. It's often more useful to have some text around that number to make it more human-readable...like this:

  int my_number = 7;
 
  Serial.print("My number is ");
  Serial.println(my_number);

Which will print out:

My number is 7