循环链表

问题：我用的是尾插入法，主要是在输出的时候循环条件不要用错了^^,昨天查资料时遇见了一批“外星人”，今天看循环链表时又遇见“外星人”了**!

贴代码:

#include <iostream>
#include <cstdlib>

using namespace std;

typedef struct CircleList
{
	int data;
	struct CircleList *next;
}*CList;

void createCList(CList &clist)
{
	 CList head,node;
	 int c;
	 clist=(CList)malloc(sizeof(struct CircleList));
	 if(!clist)
	 {
		 cout<<"allocate fail"<<endl;
	 }
	 else
	 {
		 clist->next=NULL;
	 }
	 head=clist;
	 scanf("%d",&c);
	 while(c!=-1)
	 {
		 node=(CList)malloc(sizeof(struct CircleList));
		 if(!node)
		 {
			 cout<<"allocate fail"<<endl;
			 exit(-1);
		 }
		 else
		 {
		 node->data=c;
		 node->next=clist;
		 head->next=node;
		 head=node;
		 }
	     scanf("%d",&c);
	 }
}

void displayCList(CList clist)
{
	CList head;
	head=clist;
	while(head->next!=clist)
	{
		head=head->next;
		cout<<head->data<<"->";
	}
	cout<<endl;
}

int main()
{
	CList clist;
	cout<<"创建循环链表:"<<endl;
	createCList(clist);
	cout<<"输出循环单链表"<<endl;
    displayCList(clist);
	return 0;
}

运行结果: