无法访问 private 成员(在“std::basic_ios<_Elem,_Traits>”类中声明



error C2248: “std::basic_ios<_Elem,_Traits>::basic_ios”: 无法访问 private 成员(在“std::basic_ios<_Elem,_Traits>”类中声明)问题解决
原因好像是流对象是不允许复制，所以在传给函数作为参数是应该传入引用，这样就没有问题了

ostream& operator<<(ostream out , myVector v){out<<"("<<v.x<<","<<v.y<<","<<v.z<<")"<<endl;return out ;}

改成：

ostream& operator<<(ostream& out , myVector v)
{
out<<"("<<v.x<<","<<v.y<<","<<v.z<<")"<<endl;
return out ;
}