smart Pointer error?

[firix]

Hi there,

I wrote a smart pointer class
but I can not write more.
Could you share with me your knowledge of C++.

Thanks for reading!

template<class T>
class smartPTR{
	T *mp;
	T *Array;
	int size;
public:
	smartPTR(T *p):mp(p){}
	smartPTR(T *p ,T *v ,int s)
	{ 
		mp = &p[0];
		Array = v;
		size = s;
	}

	~smartPTR()
	{
		delete mp;
	}
	T &operator*()
	{
		return *mp;
	}
	T *operator->()
	{
		return mp;
	}

	T &operator[](int i)
	{
		return mp[i];
	}

	smartPTR &operator++()
	{
		this->mp++;
		return *this;
	}
	smartPTR operator++(int);
	smartPTR &operator--();
	smartPTR operator--(int);

};


class firix{
	int x;
public:
	firix(int xx = 0):x(xx){}
	void display()const
	{
		cout << "x :" <<  x  << endl;

	}


};


int main()
{
	smartPTR<firix> ptr = new firix[11];

	ptr->display();


	++ptr;
	
	return 0;
}

[firix]

template<class T>
class smartPTR{
	T *mp;
	T *Array;
	int size;
public:
	smartPTR(T *p = 0):mp(p){}
	smartPTR(T *p ,T *v ,int s)
	{ 
		mp = &p[0];
		Array = v;
		size = s;
	}

	smartPTR<T> &operator=(smartPTR<T> &r)
	{
		if (this != &r){
			delete mp;
			mp = r.mp;
			r.mp = NULL;
		}

		return *this;
	}

	~smartPTR()
	{
		delete mp;
	}
	T &operator*()
	{
		return *mp;
	}
	T *operator->()
	{
		return mp;
	}

	T &operator[](int i)
	{
		return mp[i];
	}

	smartPTR &operator++()
	{
		this->mp++;
		return *this;
	}
	smartPTR operator++(int);
	smartPTR &operator--();
	smartPTR operator--(int);

};


class firix{
	int x;
public:
	firix(int xx = 0):x(xx){}
	void display()const
	{
		cout << "x :" <<  x  << endl;

	}


};