什么时候应该将数组声明为 static const？

Question

我在 Linux 系统中遇到了关于以通常方式声明的数组的警告。该警告表示应使用

static const char * const

而不是仅使用

char *

。这是为什么？

我如何知道何时应该将数组声明为静态常量？

const

后面的

char *

是什么意思？

Answer 1

为什么使用 static const char * const？

Using `static const char * const` ensures that both the pointers and the data they point to are immutable and limited to the current file. This prevents accidental modifications and enhances code safety.

何时将数组声明为 static const？

An array should be declared as static const when the data is constant, should not be modified, and should only be accessed within the current file, such as for configuration values or error messages.

char * 之后 const 的含义

const after char * means the data being pointed to cannot be modified. In const char * const, the first const makes the data immutable, and the second const makes the pointer itself immutable.