如何将char数组转换为字符串? [英] How to convert a char array to a string?

问题描述

使用字符串的c_str 函数然后执行strcpy 将C++ string 转换为char 数组非常简单.但是，如何做到相反呢?

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 char 数组，例如: char arr[ ] = "This is a test"; 要转换回:string 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

string 类有一个构造函数，它接受一个以 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";

// or
str = arr;

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