Which Data Type to Use for Postal Codes?
Question
Which of the following data types should a developer use when creating a variable to hold a postal code?
Answers
Explanations
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The correct data type to use when creating a variable to hold a postal code is a string.
A string is a sequence of characters, including letters, numbers, and special characters. Postal codes can contain both letters and numbers, making them more suited for storage as strings than as integers, floats, or booleans.
An integer is a whole number that can be positive, negative, or zero. Since postal codes may include letters, they cannot be represented as integers.
A float is a decimal number, which is also not suitable for storing postal codes because postal codes do not include decimal values.
A boolean is a data type that represents either true or false, which is not appropriate for storing postal codes because they cannot be classified as true or false.
Therefore, the best data type to use when creating a variable to hold a postal code is a string.
