不带头结点链表，尾部插入法创建

/*创建一个链表,尾结点插入法*/
#include<stdio.h>
#include<stdlib.h>
#define DataType char

/*节点类型*/
typedef struct node
{
    DataType data;
    struct node *next;
}ListNode,*LinkList;

/*
*不带头结点
*尾插入法的实现
*从头结点读取的时候，就是按照输入顺序读出的
*/
LinkList createLinkList()
{
    DataType ch;
    LinkList p,head,rear;
    head = rear = NULL;

    /*读取元素*/
    puts("输入节点的数据:");
    while((ch = getchar()) != '\n')
    {
        p = (LinkList)malloc(sizeof(ListNode));
        if(!p) exit(0);
        p->data = ch;
        p->next = NULL;
        if(NULL== head) head = p;
        else rear->next = p;
        rear = p;
    }

    return head;
}

/*在链表尾部插入元素*/
LinkList insertLinkList(LinkList head,DataType item)
{
    LinkList temp,rear = head;
    while(rear->next)
        rear = rear->next;
    temp = (LinkList)malloc(sizeof(ListNode));
    if(!temp) exit(0);

    temp->data = item;
    temp->next = NULL;
    rear->next = temp;

    return head;
}
/*
*从链表中查找元素并删除它
*支持删除相同元素
*/
LinkList delLinkList(LinkList head,DataType item)
{
    LinkList q,p = head;
    while(p)
    {

        if(p->data == item)
        {
            if(p == head)
                {head = p->next;free(p);p = head;continue;}
            q->next = p->next;
            free(p);
            p = q->next;
            continue;
        }
        q = p;
        p = p->next;
    }
    return head;
}
void destroyLinkList(LinkList head)
{
    LinkList p = head;
    while(head)
    {
        p = head->next;
        free(head);
        head = p;
    }
}
void print(LinkList head)
{
    LinkList p = head;
    while(p)
    {
        printf("%c",p->data);
        p = p->next;
    }
}
int main()
{
    char ch;
    LinkList p,head;
    head = createLinkList();

        if(NULL == head)
        printf("The LinkList is empty.\n");
    else
        print(head);

    puts("\n输入要插入的元素:");
    ch = getchar();
    getchar();
    head = insertLinkList(head,ch);

    if(NULL == head)
        printf("The LinkList is empty.\n");
    else
        print(head);

    puts("\n输入您要删除的元素：");
    ch = getchar();
    getchar();
    head = delLinkList(head,ch);
    if(NULL == head)
        printf("The LinkList is empty.\n");
    else
        print(head);

    destroyLinkList(head);

    return 0;
}