Thread: Need for function define

Can any one help to define ??? part in my data structure project?
thanks.

Code:

....
...

struct Customer{
   int  tckimlikno;   // customer identity number
   string name;
   string surname;
   void set(int a, string b, string c);
};

struct customerNode
{
	Customer person;
	customerNode * next, *prev;
	customerNode():next(NULL),prev(NULL){};
};

class activity
{	
	int actNo,size;
	string actName;
	customerNode *headc,*tailc;
	customerNode * searchID(int);

public:
	activity(int a , string b);
	activity();
	int getAct() { return actNo; };
	string getName() { return actName; };
	int getSize() { return size; };
	void add(Customer & C);
	void deleteCustomer(int);
	void print() const;
};

activity::activity()
{
    headc = NULL;
    tailc = NULL,
    size = 0;
    actNo = 0;
    actName = "";
}

activity::activity(int a , string b)
{
    headc=NULL;
    tailc = NULL;
    size = 0;
    actNo = a;
    actName = b;
}



class Tree{

public:
	struct treeNode{
		activity element;
		treeNode *left,*right;
		treeNode():left(NULL),right(NULL){};
	};

	Tree():root(NULL),treesize(0){};
	treeNode * nodeSearch(int acno, string actname, treeNode * node);
	treeNode * getRoot() { return root; };
	void addAct(activity & dep);
	void removeAct(int acno, string actname);
	int deleteTree(treeNode *treep);
private: 
	treeNode *root;
	int treesize;

};

void Customer::set(int a, string b, string c)
{
 tckimlikno = a;	name = b; surname = c;
};

customerNode * activity::searchID(int _id)
{

????????????????????????????????????????????
	
}

void activity::add(Customer &C)
{
   -
}

void activity::deleteCustomer(int id)
{
-

}

void activity::print() const
{
-
};

Tree::treeNode * Tree::nodeSearch(int acno, string actname,Tree::treeNode *node)
{
-
}

int Tree::deleteTree(Tree::treeNode *treep)
{
-
}

void Tree::removeAct(int acno, string actname)
{	
-}
}

void Tree::addAct(activity &act)
{
 ???????????????????????*

}

void menu()
{
 cout << "MENU" << endl;
	cout << "1- Add a activity" << endl;

}

int main()
{
 ....

 		case 1:
		{
			int a;
			string b;
			cout << "Enter new activity name: ";
			cin >> b;
			cout << "Enter the activity code: ";
			cin >> a;
			activity newAct(a,b);
			menucontent.addAct(newAct);
			break;
		}

	  ....
	}
	return 0;
}

So also i did the %90 of the project. And i only asked the 2 function define.
And i didnt say you must do it. i only asked can you help me.
and if the people want to leant c/c++, you can examine this project, and if anyone want, i can send the all project source code, it doesnt matter for me.

I don't think 90% of the functions are going to be question marks; they just don't come up that often.

And if you did actually do the rest of the program, you wouldn't be asking this (you can write nodeSearch but not searchID? you can write removeAct but not addAct?) so hey.