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ITK 168 Decisions

Learn how to control program flow efficiently with if, else, and while statements in programming. Understand logic, conditions, and loops for optimal results. Enhance your coding skills now!

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ITK 168 Decisions

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  1. ITK 168 Decisions Dr. Doug Twitchell September 20, 2005

  2. IF • What if I want the robot to pick a thing up if there’s one there, but not pick a thing up if there isn’t?

  3. if if(bob.canPickThing()){ bob.pickThing(); } if(<<test>>){ <<list of statements>> }

  4. if if(bob.canPickThing()){ bob.pickThing(); } boolean statement if(<<test>>){ <<list of statements>> }

  5. if if(bob.canPickThing()){ bob.pickThing(); } true or false boolean statement if(<<test>>){ <<list of statements>> }

  6. if Flowchart

  7. if • Can I use this to see if there is a wall in front of me?

  8. if if(bob.frontIsClear()){ bob.move(); } bob.turnLeft(); bob.move(); <<previous statements>> if(<<test>>){ <<list of statements>> } <<continue with following>>

  9. if • What if I want it to left if the front isn’t clear?

  10. if if(!bob.frontIsClear()){ bob.turnLeft(); } bob.move(); <<previous statements>> if(<<test>>){ <<list of statements>> } <<continue with following>>

  11. if • Can I check to see if the robot is on a certain street?

  12. if == equal > greater than < less than >= g.t. or equal <= l.t. or equal != not equal if(bob.getStreet == 1){ bob.move(); } if(<<test>>){ <<list of statements>> }

  13. while • what if I want the robot to pick up all of the things in a row

  14. while while(bob.canPickThing()){ bob.pickThing(); bob.move(); } while(<<test>>){ <<list of statements>> }

  15. while while(bob.canPickThing()){ bob.pickThing(); bob.move } true or false boolean statement while(<<test>>){ <<list of statements>> }

  16. while Flowchart

  17. while • How about moving the robot until it gets to avenue 50?

  18. while while(bob.getAvenue() < 50){ bob.move } while(<<test>>){ <<list of statements>> }

  19. if…else • What about when want to turn right if wall is in front and turn left otherwise?

  20. if…else if(bob.frontIsClear()){ bob.turnLeft(); } else { bob.turnRight(); } bob.move(); true or false boolean statement if(<<test>>){ <<list of statements>> }

  21. if…else Flowchart

  22. Example • How can we change the street cleaning robots to make it work better with if and/or while statements?

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