Build an IF/ELSE decision, predict the branch, test boundary values, and debug the first rule that disagrees with the goal.
| Input | Expected | Actual | Result |
|---|---|---|---|
| No suite run yet. | |||
Equality is a boundary: `>` and `>=` do not make the same decision when the input equals the threshold.
🎓 You are learning to: Build an IF/ELSE decision, predict the branch, test boundary values, and debug the first rule that disagrees with the goal.
Welcome! Three steps and you are learning:
It tells you what to build, sort or fix.
Try things and watch carefully what happens. You can always reset.
Use the feedback like a detective: what clue tells you what to change?
💡 Top tip: if you get it wrong, that is useful — find out why before trying again.
Nothing you do here is saved or sent anywhere — experiment freely. Reopen this guide any time with the ? Help button.