Values and Variables

Values and Variables

1. Variables

   • Types of variables
     • Integer
       • Unsigned
         • Number without a symbol
         • 7, 12, 24, etc.
       • Signed
         • Number with a symbol that marks a change in a value
           • Possitive value: +
           • Negative value: -
         • -2, +4, -27, +42, etc.
       • A whole number that counts objects or things
       • Examples: 1, 2, 3, etc.
     • String
       • Usually are between quotation marks ""
       • Concatenation
         • Combine strings together
         • Example: "Hello" + " John"= Hello John
       • A combination of letters put together
       • Examples: "Hello", "John",etc.
     • Decimal
       • Number with decimals
       • Examples: 3.12, 4.5965, etc.