Question

C++ 报错 error C2593: 'operator <<' is ambiguous

#include<iostream>
#include"string"
using namespace std;
class Person

{

friend ostream &operator<<( ostream &, const Person &);

friend istream &operator>>( istream &, Person &);

public:
int age;
string name;
string hobbies;
};

ostream &operator<<(ostream &output, const Person &Person )
{
output <<"("<< Person.age << ")"
<< Person.name
<< Person.name;
return output;
}

istream &operator>>(istream &input, Person &Person )

{
input>>Person.age
>>Person.name
>>Person.name;
return input;
}

void main()
{
Person lw;

cout<<"请输入李文属性"<<endl;

cin>>lw;

cout<<lw;

}
系统报错
error C2593: 'operator >>' is ambiguous
error C2593: 'operator <<' is ambiguous

求告诉错在哪里 并如何改正

Answer 1

在vs2010上运行正常，你用的编译器的问题吧

output <<"("<< Person.age << ")"
        << Person.name
		<< Person.name;//两次输入name，估计你打错了
           return output;