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ITEC 109

ITEC 109. Lecture 10 More on Repetition / Choices. Review. Questions Mini-exam next Tuesday Iteration What is it How do we use it What are reasons why we would use it. Objectives. Extend choices beyond just one or the other Work on a homework assignment. Reality.

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ITEC 109

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  1. ITEC 109 Lecture 10 More on Repetition / Choices

  2. Review • Questions • Mini-exam next Tuesday • Iteration • What is it • How do we use it • What are reasons why we would use it

  3. Objectives • Extend choices beyond just one or the other • Work on a homework assignment

  4. Reality • There are more than 2 cars in the world

  5. Example Extremely expensive Expensive Average Cheap

  6. Problem • Want to buy a car, but not multiple cars • Have $200k in the bank, want to get best car Are you always going to buy a camry? bankAccount=200000; if (bankAccount>500000): buyferrari(); bankAccount = bankAccount-500000; if (bankAccount > 60000): buybmw(); bankAccount = bankAccount -60000; if (bankAccount > 20000): camry.buy(); bankAccount = bankAccount – 20000;

  7. Multiple Choices • 1st choice • if • 2nd to Xth choice • else if • Last choice • else bankAccount=200000; if (bankAccount>500000): buyferrari (); bankAccount = bankAccount-500000; elif (bankAccount > 60000): buybmw(); bankAccount = bankAccount -60000; elif (bankAccount > 20000): buycamry(); bankAccount = bankAccount – 20000; Optional

  8. Homework • Create a program that asks the user to input one of four possible commands • Use if /elsif / else to call a function that implement the command • Come up with your own commands • Ideas • Turtle movement • Math formulas

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