1. Fall 2007ACS-1805 Ron McFadyen1 Chapter 7 Repetition

2. Fall 2007ACS-1805 Ron McFadyen2 Repetition An If/Else is a control statement – it determines the actions to be executed next. Alice has two other control statements that are used to determine whether an action should be executed again: Loop : used when we know exactly how many times an action should be repeated While : used when we don’t know in advance how many times an action should be repeated

3. Fall 2007ACS-1805 Ron McFadyen3 Loop blah

4. Fall 2007ACS-1805 Ron McFadyen4 While blah

5. Fall 2007ACS-1805 Ron McFadyen5 Loop The effect of While is often illustrated with the following diagram conditio n Action A true false

6. Fall 2007ACS-1805 Ron McFadyen6 Nested Loops blah

7. Fall 2007ACS-1805 Ron McFadyen7 Tips/Techniques Events & Repetition Begin/during/end