求教啊operator<<的操作符重载解决思路

求教啊，operator<<的操作符重载
#include<iostream>
 using namespace std;
 class MyString{
 public:
  MyString(char*s){
  str=new char[strlen(s)+1];
  strcpy(str,s);
  }
  ~MyString(){
  delete[]str;
  }
ostream&operator<<(ostream&os,MyString&string){
  str=new char[strlen(string.str)+1];
  strcpy(str,string.str);
  return os<<str<<endl;
 }
 private:
  char*str;
 };
  int main(){
  MyString a("hello");
  cout<<a<<endl;
  return 0;
}


操作符重载出错啊，求指教啊

[解决办法]

C/C++ code

#include<iostream> using namespace std; class MyString{ public:  MyString(char*s){  str=new char[strlen(s)+1];  strcpy(str,s);  }  ~MyString(){  delete[]str;  }//注意 friendfriend ostream&operator<<(ostream&os,MyString&string){  str=new char[strlen(string.str)+1];  strcpy(str,string.str);  return os<<str<<endl; } private:  char*str; };  int main(){  MyString a("hello");  cout<<a<<endl;  return 0;}
[解决办法]
 重载>>和<<只能设为非成员函数！！
C/C++ code
#include<iostream> using namespace std; class MyString{ public:  MyString(char*s){  str=new char[strlen(s)+1];  strcpy(str,s);  }  ~MyString(){  delete[]str;  }//注意 friendfriend ostream&operator<<(ostream&os,MyString&string)； private:  char*str; };  ostream&operator<<(ostream&os,MyString&string){  str=new char[strlen(string.str)+1];  strcpy(str,string.str);  return os<<str<<endl; }  int main(){  MyString a("hello");  cout<<a<<endl;  return 0;}