的char []和char *区别？ [英] Difference between char[] and char*?

问题描述

  

可能重复：结果
  Ç - 之间与ldquo差; VAR的char []＆rdquo;的和＆ldquo;字符* VAR和rdquo ;? 结果
  <一href=\"http://stackoverflow.com/questions/2938895/difference-between-char-a-string-char-p-string\">Difference字符之间的[] =＆ldquo;串rdquo ;;的char * p =＆ldquo;串rdquo ;;

有人会解释究竟是什么的char []和char *之间的区别是什么？
对于之间的

例如差异

 字符名称[] =土;
 

和

 的char * name =土;
 

感谢

解决方案

 字符NAMEA [] =土;
字符* PNAME =土;
 

一个是一个数组（名称 NAMEA 指的块的字符）。

另一种是指向一个字符（名称 PNAME 指一个指针，这恰好指向字符块的第一个字符）。

虽然前者经常会衰变为后者，这并非总是如此。试着做一个的sizeof 对他们既要明白我的意思。

数组的大小，好了，数组的大小（六个字符，包括终端为空）。

指针的大小取决于你的指针宽度（4或8，或其他）。什么 PNAME 的指向的大小不是数组，但第一个字符。因此这将是1

您也可以的移动的像 PNAME ++ 的事情（除非他们宣布不变，像指针字符* const的PNAME = ...; 当然）。不能移动数组名指向它的第二个字符（ NAMEA ++; ）。

Possible Duplicate:
C - Difference between “char var[]” and “char *var”?
Difference between char a[]=“string”; char *p=“string”;

would someone explain what exactly the difference between char[] and char* is? for example difference between

char name[] = "earth";

and

char *name = "earth";

thanks

解决方案

char namea[] = "earth";
char *pname = "earth";

One is an array (the name namea refers to a block of characters).

The other is a pointer to a single character (the name pname refers to a pointer, which just happens to point to the first character of a block of characters).

Although the former will often decay into the latter, that's not always the case. Try doing a sizeof on them both to see what I mean.

The size of the array is, well, the size of the array (six characters, including the terminal null).

The size of the pointer is dependent on your pointer width (4 or 8, or whatever). The size of what pname points to is not the array, but the first character. It will therefore be 1.

You can also move pointers with things like pname++ (unless they're declared constant, with something like char *const pname = ...; of course). You can't move an array name to point to it's second character (namea++;).

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