error C2593: 'operator <<' is ambiguous
#include <iostream>
using namespace std;

class Test
{
public:
Test(int age = 0,char *name = "\0")
{
Test::age = age;
strcpy(Test::name,name);
}
void outmembers(ostream &out)
{
out<<"Age："<<age<<endl<<"Name："<<this->name<<endl;
}
friend ostream& operator <<(ostream& ,Test&);
protected:
int age;
char name[50];
};
ostream& operator <<(ostream& out,Test &temp)
{
temp.outmembers(out);
return out;
}
int main()
{
Test a(24,"管宁");
cout<<a;
system("pause");
return 0;
}
会出现
error C2593: 'operator <<' is ambiguous
Error executing cl.exe.

date22_1.obj - 1 error(s), 0 warning(s)
错误，是编译器的问题吗？

[解决办法]

C/C++ code

#include <iostream>   using std::ostream;  using std::cout;using std::endl; class Test{   public:     Test(int age = 0,char *name = "\0")     {     Test::age = age;     strcpy(Test::name,name);     }     void outmembers(ostream &out)     {     out<<"Age："<<age<<endl<<"Name："<<this->name<<endl;     }     friend ostream& operator <<(ostream& ,Test&);   protected:     int age;     char name[50];   };   ostream& operator <<(ostream& out,Test &temp)   {     temp.outmembers(out);     return out;}   int main()   {     Test a(24,"管宁");     cout<<a;    system("pause");  return 0;}