What naming conventions do you use for functions and variables?

If you’re contributing to an existing project, match the conventions already used there. That keeps the code readable and avoids making people remember multiple naming systems. If it’s a new project, follow the language’s official style guide or the conventions recommended by your tools.

Different teams prefer different styles, including PascalCase, camelCase, and snake_case. None is automatically correct, but consistency, clarity, and matching the surrounding code are usually more important than personal preference.

Use the standard convention for the language you’re working in. For example, camelCase is common in Java, PascalCase is widely used in C#, and snake_case is typical in some C++ projects. Consistency matters more than picking one style universally.

The biggest rule is not to mix styles based on mood. Pick a consistent pattern and use descriptive names that make the identifier’s purpose clear. A well-named function should give some indication of what it does, while variables should describe the value they hold.