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Programming Basics 2

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Why use comments?
- They help others under the purpose of the code and helps keep track of authors, date versions and changes and it helps know how to use the code
How do you add a multiple line comment?
// single line comment ignored by the computer //
/* blah blah blah */
How do you add a single line comment?
Words that have meaning for the computer within the program
What are 3 types of identifiers?
Words we make up and define for the computer, words that another programmer defined for use, and words that have been reserved by the creators of Java for special purposes
Reserved Words
They are reserved for a specific purpose. They can only be used in predefined ways
if, public, null
3 Examples of Resevered Words
Computer programs - ms word, paint
the physical components of the computers (printer, keyboard)
Two categories of Software
Operating Systems and Application Programs