1 关于const char*, char const* and char *const 等的区别
2
3 助记方法：
4 把一个声明从右向左读
5 比如：
6 char * const cp;
7 //cp is a const pointer to char
8
9 const char * cp;
10 //cp is a pointer to const char;
11 规则：
12 //从右到左读：
13 // * 读成 pointer to
14 // ** 读成 (a) pointer to (a) pointer to
15 // * const 读成 const pointer to
16 再比如：
17 char ** cpp; //cpp is a pointer to ( a pointer to char )
18
19 const char ** cpp; // cpp is a pointer to ( a pointer to const char )
20
21 char * const * cpp; //cpp is a pointer to const pointer to char
22
23 const char * const * cpp; //cpp is pointer to const pointer to const char
24
25 char ** const cpp; //cpp is const pointer to pointer to char
26
27 char * const * const cpp;//cpp is const pointer to const pointer to char
28
29 const char * const * const cpp; //cpp is const pointer to const pointer to c
onst char
30
31
32 //×××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××
33 //关键：
34 //只要记住：
35 //（1）把声明从右到左读
36 //（2）* 读成 pointer to
37 //×××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××