While that allows you to use the string class, the relevant operator<< is defined in the <string> header itself, so you must include that manually
为什么有时候使用visual c++会提示 cout <<
不能输出 string
类型: 因为 <iostream>
包含了头文件 <xstring>
, 该头文件引入了 string
类型但是未引入 operator<<