带头结点头部插入创建链表

/*创建一个带头结点的链表，头部插入法创建*/
#include<stdio.h>
#include<stdlib.h>

#define DataType char

typedef struct node
{
    DataType data;
    struct node *next;
}ListNode,*LinkList;

/*创建一个带头结点的链表*/
LinkList createLinkList()
{
    char ch;
    LinkList temp,head = (ListNode*)malloc(sizeof(ListNode));
    head->next = NULL;
    puts("
输入链表节点的数值:");
    while((ch = getchar()) !='
')
    {
        temp = (ListNode*)malloc(sizeof(ListNode));
        if(!temp) exit(0);
        temp->data = ch;

        temp->next = head->next;
        head->next = temp;
    }
    return head;
}
/*在链表的结尾出插入新节点*/
void insertLinkList(LinkList head,DataType item)
{
    LinkList p,temp = (ListNode*)malloc(sizeof(ListNode));
    temp->data = item;
    temp->next = NULL;
    if(!temp) exit(0);
    p = head;
    while(p->next)
        p = p->next;
    p->next = temp;
}

void print(LinkList head)
{
    LinkList p = head->next;
    while(p)
    {
        printf("%c",p->data);
        p = p->next;
    }
    putchar(10);
}
void destroyLinkList(LinkList head)
{
    LinkList p,q;
    p = head->next;
    while(p)
    {
        q = p->next;
        free(p);
        p = q;
        head->next = q;
    }
}
int main()
{
    char ch;
    LinkList head;
    head = createLinkList();
    print(head);

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

    destroyLinkList(head);
    return 0;
}