一个符号匹配的程序,代码检测不出错,但运行时总是指出现不匹配,求高手帮忙看看,谢谢了!!!
#include<stdio.h>#include<stdlib.h>
#define OK 1
#define FALSE 0
#define maxsize 1024
typedef struct node
{
char data;
struct node *next;
}linkstack;
linkstack *setnull(linkstack *r);
int Empty(linkstack *r);
linkstack *push(linkstack *r,char ch);
int match(char c1,char c2);
linkstack *poplstack(linkstack *r);
typedef struct
{
char data[maxsize];
int last;
}sequenlist;
int check_pair(sequenlist *L)
{
linkstack *top;
int i;
top=(linkstack *)malloc(sizeof(linkstack));
top=setnull(top);
int top_elem;
for(i=0;i<=(*L).last;i++)
{
if(Empty(top))
{
top=push(top,L->data[i]);
top_elem=i;
}
else if(match(L->data[top_elem],L->data[i]))
{
top=poplstack(top);
top_elem-=1;
}
else
{
top=push(top,L->data[i]);
top_elem=i;
}
}
if(Empty(top))
return OK;
else
return FALSE;
}
linkstack *setnull(linkstack *r)
{
r=NULL;
return r;
}
int Empty(linkstack *r)
{
if(r==NULL)
return OK;
else return FALSE;
}
linkstack *push(linkstack *r,char ch)
{
linkstack *p;
p=(linkstack *)malloc(sizeof(linkstack));
p->data=ch;
p->next=r;
return p;
}
linkstack *poplstack(linkstack *r)
{
linkstack *p;
p=r->next;
free(r);
return p;
}
int match(char c1,char c2)
{
if(((c1=='('&&c2==')')||(c1==')'&&c2=='('))||((c1=='{'&&c2=='}')||(c1=='}'&&c2=='{'))||((c1=='['&&c2==']')||(c1==']'&&c2=='[')))
return OK;
else return FALSE;
}
void main()
{
sequenlist *A;
A=(sequenlist *)malloc(sizeof(sequenlist));
int m,x,i;
printf("请输入元素个数:\n");
scanf("%d",&m);
printf("\n");
printf("请输入带验证匹配的符号:\n");
for(i=0;i<m;i++)
{
scanf("%c",&A->data[i]);
}
A->last=m-1;
x=check_pair(A);
if(x)
printf("全部匹配成功;\n");
else printf("未匹配完成;\n");
}