Thread: help with for loop

What does the value 720 represent? Instead of hardcoding a value, use a variable with a proper name that is given a value using an expression. For example:
int timeToRunInSec = 12*60*60; // number of seconds in 12 hours with 60 min/hr, 60 sec/min

How long does it take for the code inside of the loop to execute? Say 30 seconds per iteration
Then for the loop to execute for 12 hours takes this number of iterations:
number of seconds in 12 hours / 30 sec per iteration

Please copy the exact text of any compiler error message and paste it here.
Also post the code that caused the errors.

Also, the value in set_intensity(255) suggests an 8-bit integer with a range of 256 [0..255], or some larger multiple thereof. But there's also an entry for set_intensity(2000)
If 2000 were a reasonable value, then it would follow that 250 would be a reasonable fraction of it.

Valid range of values is something that can be added into comment blocks, which is then read and displayed in IDE mouse-over windows

  /**
   * Set light level
   * @param intensity [0..255]
   */
  public static void set_intensity(int intensity){
    // code
  }

Screenshot

Do we just use the timeToRunInSec in place of ...

In place of the 720.
Its value would be the number of times you want to loop to iterate.