C++ function parameter naming convention

C Function parameter naming conventions include: using descriptive names, clearly stating the purpose of the parameter, using lowercase snake naming, using underscores to separate words, and prefixing the parameter type, such as in_value (input), out_result (output) and &variable_name (reference) )

C Function parameter naming convention

In C, it is very important to maintain clear and readable code. Naming conventions for function parameters are a key part of achieving this goal. This article will introduce best practices for C function parameter naming and provide real-world examples.

General Rules

• Use descriptive names that clearly describe the purpose of the parameter.
• Use small snake case and separate words with underscores.
• Prefix with the type of the parameter to enhance clarity.
• Avoid using names that are too generic, such as value or temp.
• Keep the name as as concise as possible, while still keeping it descriptive.

Specific rules

• Input parameters: Use in_ prefix, for example in_value .
• Output parameters: Use the out_ prefix, for example out_result.
• Input/output parameters: Use inout_ prefix, for example inout_buffer.
• Constant parameters: Use const_ prefix, for example const_pi.
• Quotation parameters: Use & as the name suffix, for example num_amount&.
• Pointer parameters: Use * as the name suffix, for example message_buffer*.

Practical case

Let us consider a function that sums two numbers:

int add_numbers(int in_first_number, int in_second_number) {
  return in_first_number + in_second_number;
}

In this example, the parameter names are clear Describing their role clearly helps make functions easier to understand.

On the other hand, consider the following example that does not follow the naming convention:

int mystery(int a, int b) {
  return a + b;
}

Although the function is still performing the addition, the parameter names a and b are not No information is given about its purpose. This makes the function harder to understand and maintain.

Conclusion

By following the C function parameter naming convention, the readability and maintainability of the code can be greatly improved. Clear and concise code can be achieved by using descriptive names, following specific rules, and clearly distinguishing input, output, and reference parameters.

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