OJ Board

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef int ITEM;

struct node
{
node* link;
ITEM item;
};

class Cstack
{
public:
node *top;
node *tail;
int scount;
Cstack()
{
scount=0;
top=NULL;
}

~Cstack()
{
del();
}

void del()
{
node *tmp;
while(top)
{
tmp=top ...