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COMP 110 Designing Programs

COMP 110 Designing Programs. Tabitha Peck M.S. January 16, 2008 MWF 3-3:50 pm Philips 367. 1. Announcements. Office Hours After Class Today Come if you don’t have jGRASP working Textbook. 2. Questions?. Why 8 bits in a byte? Any other questions?. 3. Writing Algorithms in pseudocode

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COMP 110 Designing Programs

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  1. COMP 110Designing Programs Tabitha Peck M.S. January 16, 2008 MWF 3-3:50 pm Philips 367 1

  2. Announcements • Office Hours • After Class Today • Come if you don’t have jGRASP working • Textbook 2

  3. Questions? • Why 8 bits in a byte? • Any other questions? 3

  4. Writing Algorithms in pseudocode Encapsulation, polymorphism, and inheritance Variables, arguments, statements, and syntax Today in COMP 110 4

  5. Algorithm • A set of instructions for solving a problem 5

  6. Pseudocode • combination of code and English used to express an algorithm before writing algorithm into code 6

  7. Vocabulary • Variables - store a piece of data • Statements - instructions to the computer • Syntax - grammar rules for a language • Arguments - information methods need to carry out its action 7

  8. Encapsulation (Information Hiding) • packing things up, only seeing part of what is going on 8

  9. Polymorphism • “many forms” • Same instruction to mean same thing in different contexts. 9

  10. Inheritance • way of organizing classes. • At each level classification becomes more specialized. Sandwich Bread Sub Salami Meatball PB&J Turkey 10

  11. Homework • Program 1 is on the web page • We will look at code in recitation that will help you

  12. Friday • Recitation (bring charged laptop) • Lab 1 • Programming help for Program 1 12

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