c++中字符串的输入和打印问题

[著雍]

《C++Primer（第四版）》中有这样的程序：

int main()
{
    string s;
    cin >> s;
    cout << s << endl;
    return 0;
}

但是我在vs2008中编译则产生错误，这是怎么回事呢？

[蓝枫10]

#include <string>
uisng std:string;
using std::endl;
using std::cin;
using std::cout;

[著雍]

这些都加了，错误：error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)

[著雍]

把#include <string>写成#include<string.h>了……

[Xomic]

在main函数之前加上

#include <string.h>
#include <iostream.h>
using namespace std;

[著雍]

加上#include<string.h>也会出现同样的错误。改成#include<string>就好了