【ERROR #148】variable “xxx“ has already been initialized 在 my_usart c 中已经定义并初始化了 current_huart 变量，而在 main h 中使用 extern 时不应再次初始化。 extern 只能声明变量，表示该变量已在其他地方定义，不能重新初始化。 extern 的作用只是让编译器知道这个变量存在，而不是重新定义或初始化它。 文章浏览阅读1 2k次，点赞6次，收藏7次。 定义创建了一个变量，指定其类型，并分配存储空间初始化为变量赋初始值声明告诉编译器，变量在其他地方定义与变量的类型，只能声明不能初始化。 _has already been initialized
[SOLVED] error 148:variable xxx has already been initialized Most likely the issue stems from a conflict between your port code and the compiler header code Click to expand my newer post wanished : ? The problem is most likely due to the fact some of your header files lack the proper preprocessor commands to prevent multiple inclusions of the header file
How to address variable might not have been initialized error Discover how to identify and resolve the 'variable might not have been initialized' error in Java programming Learn the fundamentals of variable initialization and effective troubleshooting techniques