将NSString转换为char数组 [英] Convert NSString into char array

问题描述

我有一个char[]类型的变量，我想在其中复制NSString值.如何将NSString转换为char数组?

I have a variable of type char[] and I want to copy NSString value in it. How can I convert an NSString to a char array?

推荐答案

使用

您还可以使用

You could also use -[NSString cStringUsingEncoding:] if your string is encoded with something other than UTF-8.

一旦有了const char *，就可以像处理chars数组一样使用它:

Once you have the const char *, you can work with it similarly to an array of chars:

printf("%c\n", c[5]);

如果要修改字符串，请进行复制:

If you want to modify the string, make a copy:

char *cpy = calloc([s length]+1, 1);
strncpy(cpy, c, [s length]);
// Do stuff with cpy
free(cpy);

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