深层应对c ++ - 如果给出了指向该类的指针，则复制一个类

Question

I am new to copy constructor concept .I have a basic question. Wanted to implement a function like

orig *f1(orig*o)
{
  // Returns a copy of *0 and should deep copy all the values of the parent
  // pointer.Planning to implement a copy constructor to achieve the same.
  // Can anyone provide a prototype or some idea on the same?
}
class dummyclass
{
 int value;
};
class orig
{
  dummyclass *dummy;
  char str[100];
public:
 //default constructor
:
//parametrised constructor
 orig(char *p)
{
   dummy = new dummyclass;
  //rest of the initialisation
}
orig(const orig& duplicate)
{
//copy constructor
}
};
int main()
{
  orig o("Hello");//constructor
  orig dup(o);//copy constructor
   }

I know in this way we can invoke copy constructor.But if pointer to o ie *o is given how to invoke copy constructor and do a deep copy.

Answer 1

Then dereference o :

orig* o = new orig("Hello");
orig dup(*o);