如何转换字符数组为一个字符串？ [英] How to convert a char array to a string?

问题描述

转换一个C ++ 字符串为char数组是使用字符串 c_str 函数pretty straightorward和然后做的strcpy 。但是，如何做相反？

Converting a C++ string to a char array is pretty straightorward using the c_str function of string and then doing strcpy. However, how to do the opposite?

我有一个字符数组，如：改编的char [] =这是一个测试; 转换回：
字符串str =这是一个测试。

I have a char array like: char arr[ ] = "This is a test"; to be converted back to: string str = "This is a test.

推荐答案

的字符串类有一个构造函数一个NULL结尾的C字符串：

The string class has a constructor that takes a NULL-terminated C-string:

char arr[ ] = "This is a test";

string str(arr);


//  You can also assign directly to a string.
str = "This is another string";

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