错误 C2679:二进制“<<": 没有找到使用“std::string"类型的右侧操作数的运算符(或者没有可接受的转换) [英] error C2679: binary &#39;&lt;&lt;&#39; : no operator found which takes a right-hand operand of type &#39;std::string&#39; (or there is no acceptable conversion)

问题描述

这是我的代码，我该如何解决这个错误?

Here's my code, how do I fix this error?

#include "stdafx.h"
#include <iostream>

using namespace std;

int main()
{
    string title = "THE WORLD OF PIRATES";
    cout << title << endl;
    cout << " Welcome to the world of pirates";

    cin.get();

    return 0;
}

错误是

binary '<<' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)

推荐答案

您忘记了 #include

使用 std::string 而不包含它的头文件适用于一些间接将 的部分导入到它们的 的编译器code> 或其他标题，但这不是标准的，不应依赖.此外，当您尝试输出字符串时，它们经常会中断，因为它们只包含实现的一部分，而缺少实现 operator<< 的部分.

using std::string without including it's header works on some compilers that indirectly import parts of <string> into their <iostream> or other headers but that's not standard and shouldn't be relied upon. Also they often break when you try to output a string since they only included a part of the implementation and are missing the part that implements the operator<<.

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