#include<iostream>
#include<stdio.h>
#include<string.h>
#include<malloc.h>
typedef struct Tnode
{
int no; //数据元素编号
char *data; //数据元素域
struct Tnode *Child1; //第2个孩子指针域
struct Tnode *Sibling; //下1个兄弟指针域
} Node, *Tcs;
//链栈存储结构
typedef struct Snode
{
struct Tnode *tnode;
struct Snode *next;
} *Stack;
//向栈顶压入元素data
void Push(Stack &S,Tcs tnode)
{
Stack p = (Stack)malloc(sizeof(Tnode));
p->tnode = tnode;
p->next = S->next;
S->next = p;
}//Push
void Pop(Stack &S, Tcs &tnode)
{
Stack p = S->next;
if (p)
{
S->next = p->next;
tnode = p->tnode;
free(p);
}
else tnode = NULL;
}//Pop
void CreatTree(Tcs T, Stack S)//建立树的存储结构
{
Tcs p = (Tcs)malloc(sizeof(Node));
//申请一个树结点
scanf("%d", &p->no);//读编号
if (p->no<1)return;//编号小于1结束
scanf("%s",p->data);//读入元素数据
p->Child1 = p->Sibling = NULL;
if (p->no / 10 == T->no)//第一个孩子
{
Push(S, T);
T->Child1 = p;
}
else
{
//当编号小于上层时,返回上层
while (p->no < T->no)Pop(S, T);
T->Sibling = p;
}
CreatTree(p, S);
return;
} //CreateTree
void Print(Tcs T)
{
//先序遍历输出信息
if (!T) return; //递归出口
printf("%5d %5s ", T->no, T->data); //输出第一个孩子信息
printf("%5d %5s (%5d-%5d)\n", T->no, T->data, T->Child1 ? T->Child1->no : 0, T->Sibling ? T->Sibling->no : 0); //输出兄弟结点信息
Print(T->Child1);
Print(T->Sibling);
} //Print
int main()
{
//建立树根结点
Tcs T= (Tcs)malloc(sizeof(Node));
T->no = 0;
scanf("%s", T->data);
T->Child1 = T->Sibling = NULL;
//建立空栈
Stack s = (Stack)malloc(sizeof(Tnode));
s->next = NULL;
CreatTree(T, s);//建立树
Print(T);//输出信息
putchar(10);
system("pause");
return 0;
}