What are the best practices for using constants in programming?

What are the best practices for using constants in programming?

Using constants improves code readability and maintainability. Here are some best practices: 1. Use descriptive names, 2. Group related constants, 3. Use uppercase letters for constant names, 4. Avoid magic numbers.

Can you give me an example of a constant in code?

Sure! In JavaScript, you can define a constant like this: const MAX_USERS = 100; This makes it clear that MAX_USERS should not change.

What are magic numbers and why should I avoid them?

Magic numbers are hard-coded values without explanation. They should be avoided because they make code less readable. Instead, use named constants.

How do constants differ from variables?

Constants are immutable, meaning their value cannot change once set, while variables can be reassigned.