为什么在 C 中声明一个只包含数组的结构?

问题描述：

我遇到了一些包含以下内容的代码:

I came across some code containing the following:

struct ABC {
    unsigned long array[MAX];
} abc;

什么时候使用这样的声明才有意义?

When does it make sense to use a declaration like this?

答

它允许您将数组按值传递给函数，或从函数中按值返回.

It allows you to pass the array to a function by value, or get it returned by value from a function.

结构可以按值传递，这与在这些上下文中衰减为指针的数组不同.

Structs can be passed by value, unlike arrays which decay to a pointer in these contexts.