Question 6.8:Pratically speaking,what is the difference between arrays and pointers?

那个谁

Q: Practically speaking, what is the difference between arrays and pointers?
A: An array is a single, preallocated chunk of contiguous elements (all of the same type), fixed in size and location. A pointer is a reference to any data element (of a particular type) anywhere. A pointer must be assigned to point to space allocated elsewhere, but it can be reassigned (and the space, if derived from malloc, can be resized) at any time. A pointer can point to an array, and can simulate (along with malloc) a dynamically allocated array, but a pointer is a much more general data structure (see also question 4.1).
Due to the so-called equivalence of arrays and pointers (see question 6.3), arrays and pointers often seem interchangeable, and in particular a pointer to a block of memory assigned by malloc is frequently treated (and can be referenced using []) exactly as if it were a true array. See questions 6.14 and 6.16. (Be careful with sizeof; see question 7.28.)
See also questions 1.32, 6.10, and 20.14.

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问题：从实际情况来说，数组和指针的区别是什么？
回答：一个数组就是一块被预先分配好的连续的用来装元素（相同的类型）的位置。一个指针就是对任何位置的元素（一种特定的类型）的引用。一个指针必须指向被分配的空间的一个地方，但是它也可以被重新赋值（并且如果这个空间来自于malloc函数，那么可以被重新调整大小）。一个指针可以指向一个数组，可以（和malloc函数一起使用）模拟一个被指定的动态的数组，但是一个指针是一个更加通用的数据结构（参考4.1）。
由于所谓的数组和指针是等价的说法，数组和指针经常被看做是可互换的，特别是在指针指向一块被malloc函数分配的区域的时候往往被当做是一个真的数组（可以使用[]来引用）。参考问题6.14和6.16（使用sizeof时要注意了，参考问题7.28）。
参考问题1.32、6.10和20.14。