的C指针：数组变量 [英] C pointer : array variable

问题描述

我读到这在我的书（和互联网上的许多源）：

I read this in my book (and many sources on the internet):

数组变量的点以数组中的第一个元素。

The array variable points to the first element in the array.

如果这是真的，那么数组变量和第一个元素都是不同的。对吧？

If this true, then the array variable and the first element are different. Right?

这是指低于code，就会产生两种不同的结果：

It means by below code, it will produce two different results:

int main(){
    char msg[] = "stack over flow";
    printf("the store string is store at :%p\n",&msg);
    printf("First element: %p\n",&msg[0]);
}

不过，我收到两种情况相同的结果。因此，通过这个例子，我想我们应该说：数组变量的是的第一个元素。 （因为它具有相同的地址）

But I receive the same results for the two cases. So, by this example, I think we should say: the array variable is the first element. (because it has the same address)

我不知道这是真的还是错。请教我。

I don't know if this true or wrong. Please teach me.

推荐答案

数组变量表示整个存储器块阵列占据，不仅该数组的第一个元素。因此，阵列为不可以一样数组[0] （见的sizeof阵列/ sizeof的数组[0] ）。但该阵列的第一个元件位于同一存储器地址作为数组本身

The array variable signifies the entire memory block the array occupies, not only the array's first element. So array is not the same as array[0] (cf. sizeof array / sizeof array[0]). But the array's first element is located at the same memory address as the array itself.

话说阵列指向第一元件也是不正确的，在大多数情况下，一个阵列的前pression衰变成指向其第一元件，但它们是不同的事情（再次参见 sizeof的为例）。

Saying the array points to the first element is also incorrect, in most circumstances, an array expression decays into a pointer to its first element, but they are different things (again cf. sizeof for example).

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