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#include<iostream>
using namespace std;
struct node{
	int data;	//值
	node *next;	//结构体指针 
};
int main(){
	node *head,*r;	//头结点
	head = new node;	//动态申请
	//head->data=1;//*head.data; 
	head->next = NULL;	//下一个数据	空 
	r = head;	//一个数据都没
	
	//添加一个结点
	node *p;
	p = new node;
	p->data = 3;
	p->next = NULL; 
	
	//添加
	r->next = p;
	r = p; 
	
	//删除
	p->next = p->next->next; 
	return 0;
}