What are the naming rules for functions in C language?

Function naming in C language: The naming should be concise and clear, and you can see the function function at a glance. Use camel nomenclature or underscore nomenclature to maintain the consistency of the style within the project. Avoid using abbreviation or C keywords as function names. Before writing code, think about the function function first, and then choose the appropriate naming. Code review helps identify naming issues, improve code readability and collaboration efficiency.

Function naming in C language? This problem seems simple, but it actually has hidden secrets, involving code readability, maintainability, and even team collaboration efficiency. Don’t think that just by simply giving a name, this is a science!

Let’s start with the most basic things. C language does not have any particularly strict syntax restrictions on function names. In theory, you can use various strange character combinations, but in actual development, that’s absolutely impossible! Think about it, which one looks more comfortable, func123 , my_super_duper_function , and doSomething() ? The code is written for people to read, not for compilers to read.

A good function name should be concise and clear, and the function of the function can be seen at a glance. For example, calculate_average() is better than calcAvg() because it is more descriptive. get_user_input() is clearer than input() and avoids ambiguity. Remember, function names are comments to the code. Good comments can make the code easier to understand and reduce maintenance costs.

Let's talk about naming specifications. Although the C standard does not mandate, industry conventions have become some best practices, such as the use of camelCase or underscore nomenclature (snake_case). Camel nomenclature The first letter of each word is capitalized, such as calculateAverage() ; the underscore nomenclature uses underscore to connect words, such as calculate_average() . Which method to choose depends on team habits, the key is to maintain consistency! The same style is used throughout the project, which is more important than anything else.

Then, let’s talk about some easy pitfalls. Many beginners like to use abbreviations, such as getUsrInp() . This looks concise, but for others, it is difficult to understand. Rather than pursuing short and conciseness, it is better to pursue clarity and easy to understand. In addition, avoid using function names that are the same as C keywords, such as int , float , for etc., as this will cause compilation errors and drive you crazy.

Finally, I want to share some of my years of experience. Before writing code, take some time to think about the function function and then choose the appropriate naming. Don't rush to achieve success, a good function name can help you save a lot of debugging time. Code review is also a very important part, allowing others to review your code and discover naming issues that you may be overlooking. Remember, code is the product of team collaboration, and clear naming is the basis for efficient team collaboration.

Here are some examples to appreciate the differences in naming styles:

 <code class="c">// 糟糕的命名int f(int a, int b){ return ab; } int g(char *s){ printf("%s\n", s); } // 更好的命名int add_two_numbers(int a, int b){ return ab; } void print_string(const char *s){ printf("%s\n", s); }</code>

Have you seen the difference? The latter function name clearly expresses the function's function, which greatly improves readability. Remember, writing code is like writing an article, and a good naming is the soul of an article! Don't underestimate these details, they determine the quality of the code and your programming level.

The above is the detailed content of What are the naming rules for functions in C language?. For more information, please follow other related articles on the PHP Chinese website!