什么是字符指针数组和二维数组之间的区别是什么？ [英] What are the differences between an array of char pointers and a 2D array?

问题描述

什么是字符指针数组和二维数组之间的区别是什么？

解决方案

 的char * pasz [3] = {ABC，高清，GHI};
CHAR ASZ [3] [] = {ABC，高清，GHI};
 

的异同基本相同，这两者之间：

 的char * PSZ =JKL;
CHAR SZ [] =JKL;
 

---

首先是最初的只读。

  PSZ [0] ='A'; //非法的！
 

第二，你可以修改的，因为你为它分配 [] 。

  SZ [0] ='B';
// SZ ==BKL
 

---

第一，你可以修改它指向：

 字符mysz [] =ABC;
PSZ = mysz;PSZ [0] ='B';
// mysz ==BBC
 

第二，你不能

  SZ = mysz; //不能数组分配给一个数组！
 

What are the differences between an array of char pointers and a 2D array?

解决方案

char* pasz[3] = {"abc", "def", "ghi"};
char asz[3][] = {"abc", "def", "ghi"};

The similarities and differences are basically the same as between these two:

char *psz = "jkl";
char sz[] = "jkl";

---

The first is originally read-only.

psz[0] = 'a'; // Illegal!!

The second, you can modify, since you allocate it with the [].

sz[0] = 'b';
// sz == "bkl"

---

The first, you can modify what it points to:

char mysz[] = "abc";
psz = mysz;

psz[0] = 'b';
// mysz == "bbc"

The second, you cannot:

sz = mysz; // Can't assign an array to an array!!

这篇关于什么是字符指针数组和二维数组之间的区别是什么？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！