Variables

• A place in the computer's memory to store information.
• Data can change and be compared.
• Choosing names:
• Alphabetic characters, 0-9, underscore
• Cannot include spaces or punctuation
• First character must be letter or underscore.
• Variable names are case sensitive.
• No official limit, but make them manageable!
• Correct examples:

• Incorrect examples:

Global vs. Local Variables
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Internet II: Day 2