如何将char数组转换为字符串?
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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