内存分配char *和char [] [英] Memory Allocation char* and char[]

问题描述

这两个在内存分配方面的区别是什么。

What is the difference between these two in terms of memory allocation.

char *p1 = "hello"; 
char p2[] = "hello";

推荐答案

第一个创建一个 em>变量（取决于平台的四个或八个字节的存储）并且存储字符串文本的位置。第二个创建六个字符的数组

The first one creates a pointer variable (four or eight bytes of storage depending on the platform) and stores a location of a string literal there, The second one creates an array of six characters (including zero string terminator byte) and copies the literal there.

你应该在第一行得到一个编译器警告，因为字面量是 const 。

You should get a compiler warning on the first line since the literal is const.

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