Smart Pointer implementation

SmartPointer.h

template <class Type>
class SmartPointer
{
private:
    Type * pointer;
public:
    SmartPointer() : pointer(nullptr) {}
    SmartPointer(Type * p) : pointer(p) {}
    Type * set(Type * p) { pointer = p; return p; }
    Type * get() { return pointer; }
    void destroy() { if(pointer != nullptr){ delete pointer; pointer = nullptr; } }
    ~SmartPointer() { destroy(); }
};