规范代码格式，使得代码简明易懂，提高可维护性-To standardize code format, makes the code easy to understand, improve maintainability

同一个项目组的编程规范约束，所有的程序员遵守规范，便于程序阅读和管理-The same project group of the programming code constraints, all the programmers to comply with the specification, easy to read and manage the program