5. Nested Structures

• Consider the telephone company “Chao”. Below 200 minutes, the company charges $0.20 per minute. Between 200 and 400 minutes, the price is $0.18. Above 400 minutes, the price per minute is $0.15. Calculate your phone bill with these conditions.

• The company’s conditions can be visually represented by the path of a road like the following image.

• Nested conditions can be created.

• Remember to indent nested portions of code.

Activity: CodeLens 5.1 (cl_l10_5a_en)

• Note the double indentation to satisfy the second condition.

• Now we modify the “Chao” company program for a promotion where the rate is $0.08 when you use more than 800 minutes.

Activity: CodeLens 5.2 (cl_l10_5b_en)

• Note that nested structures can grow.

• It is used to check multiple conditions.

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