node1* medis::del(node1 * cur)
{

	node1* temp;
	node1* parent;

		if ((cur->right == NULL) && (cur->left == NULL))
		{
			delete cur;
		}
		else 
		{
                        temp = cur ;
			while(cur)
			{
				if ((cur->right != NULL) && (cur->left == NULL))
				{
					parent = cur;
					cur = cur->right;
					return parent;
				}
				if ((cur->right == NULL) && (cur->left != NULL))
				{
					parent = cur;
					cur = cur->left;
					return parent;
				}
				if ((cur->right != NULL) && (cur->left != NULL))
				{
					parent = cur;
					cur = cur->right;
					return parent;
				}
				if ((cur->right == NULL) && (cur->left == NULL))
				{
					parent->right = NULL;
					parent->left = NULL;
                                        memcpy (temp,cur,sizeof (*temp)) ;
					delete cur;
				}
                                
			}
		}
}