Let's begin exploring how Swift handles information that's not a string or an integer.
Numbers can also have decimal points, like 3.14 or 9.99. In programming, these are treated differently from integers.
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Have you worked with decimals before?
Numbers with a decimal point are called floating-point numbers. In Swift, the most common type for these is Double, which provides high precision for decimal calculations.
Examples include 1.0, 3.14159, or -2.5.
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Do you think the value 100 stored without quotes would be a Double?
You can store floating-point numbers in variables just like other types:
You can also perform standard math operations (+, -, *, /) with Doubles.
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What do you think 1.5 + 2.0 would result in?
