为const char * myVar的主场迎战为const char myVar的[] [英] const char myVar* vs. const char myVar[]

问题描述

可能重复：结果
  <一href=\"http://stackoverflow.com/questions/1807530/difference-between-using-character-pointers-and-character-arrays\">Difference使用字符指针和字符数组之间

有什么区别：

const char* myVar = "Hello World!";
const char  myVar[] = "Hello World!";

如果有一个？

推荐答案

指针可以被重新分配，数组不能。

The pointer can be reassigned, the array cannot.

const char* ptr = "Hello World!";
const char  arr[] = "Hello World!";

ptr = "Goodbye"; // okay
arr = "Goodbye"; // illegal

此外，正如其他人所说：

Also, as others have said:

sizeof(ptr) == size of a pointer, usually 4 or 8
sizeof(arr) == number of characters + 1 for null terminator

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