Which of the following cannot be included in variable and constant names in most programming languages?
Correct answer: D. Period (.)
- A. Numbers
- B. Underscore (_)
- C. Letters
- D. Period (.)
Explanation
While some languages allow periods within variable names (like Python), it's generally discouraged because periods have a special meaning in many languages. For example, they are often used to separate parts of a complex name, like customer.address.
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