The simple if: one optional path

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Other lessons in this sub-strand

1. Selection: making decisions
2. Iteration: loops, break and continue
3. Sequence: steps in order
4. How Boolean expressions are used in control
5. Compound Boolean expressions in real rules
6. The simple if: one optional path
7. if-else: two paths, one of them always runs
8. if-elif-else: several bands, first True wins
9. Nested if: a decision inside a decision
10. Flowcharts for selection
11. while loops: repeat until something happens
12. for loops and range: a known number of times
13. Nested loops: a loop inside a loop
14. break: leave the loop immediately
15. continue: skip this round, not the loop
16. Choosing the right control structure
17. Combining sequence, selection and iteration