20091012-Null&Puzzle

20091012-Null&Puzzle - CSE115:Introductionto...

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Click to edit Master subtitle style CSE115: Introduction to  Computer Science I Dr. Carl Alphonce 219 Bell Hall 645-4739 [email protected] 11
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Announcements I did not lecture from slides. I showed a demo of ‘green’ for UML  class diagrams. I showed a demo of the lab 4 solution. We talked about ‘null’, the null  reference. We ended with a puzzle.
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Attendance I checked attendance today: 72% of registered students attended 28% of registered students did not attend Lecture and lab attendance is closely linked  with success in the course: students who do NOT attend regularly tend to fail students who do attend regularly tend to pass (with  good grades)
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‘null’ ‘null’ denotes the null reference, a  reference which does not refer to any  object. We can use ‘null’ to solve the two dogs,  one collar problem (see code on next  slide):
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This note was uploaded on 02/13/2011 for the course CSE 115 taught by Professor Decker during the Fall '08 term at SUNY Buffalo.

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20091012-Null&Puzzle - CSE115:Introductionto...

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