有关栈与树的问题,郁闷很久了~大家都来看看啊谢了~
有关栈与树的问题,郁闷很久了~大家都来看看啊谢了~就是用栈储存树,再调用函数求树的根节点
#include<stdio.h>
#include"malloc.h"
typedef struct node
{
char data;
struct node *lchild;
struct node *rchild;
}shu;
typedef struct
{ shu * qu[100];
int top;
} SeqStack;
SeqStack* make()
{
SeqStack *w;
w=(SeqStack*)malloc(sizeof(SeqStack));
w->top=1;
return w;
}
SeqStack * past()
{
char ch;
SeqStack *w;
int j=0,n=0;
shu *root=NULL,*s=NULL;
ch=getchar();
while(ch!='\n')
{
if(ch=='@')w->qu[w->top]=NULL;
else if(w->top>1&&w->qu[w->top/2]==NULL)//我调试时程序走到这里就走不下去了,提示undandled exceptionin wycwyc.exe:OxCOOOOOO5:Violation 是说的什么意思 帮忙解释下谢了// {ch=getchar();continue;}
else
{
s=(shu*)malloc(sizeof(shu));
s->data=ch;s->lchild=NULL;s->rchild=NULL;
w->qu[w->top]=s;
if(w->top==1)root=s;
else if(w->top%2==0) w->qu[w->top/2]->lchild=s;
else w->qu[w->top/2]->rchild=s;
n++;
}printf("iiii");
w->top++;
ch=getchar();
}printf("%d",w->qu[w->top]);
return (w);
}
main()
{
SeqStack *W;
W=make();
W=past();
printf("%d",W->qu[W->top]);
}