有头结点链表头插法

#include "datastruct.h"
#include "stdio.h"
#include "stdlib.h"
void creat_head_head(Linknode *head)
{
 Linknode *p,*q;
 char ch;
 head->next=NULL;
 p=head;
 printf("单链表元素为单个字符，连续输入，按$结束输入:\n");
 while((ch=getchar())!='$')
 {
  
  q=(Linklist)malloc(sizeof(Linknode));
  q->data=ch;
  q->next=head->next;
  p->next=q;
 }
}
int countnode_head_head(Linknode *head)
{
 Linknode *p;
 int count=0;
 p=head->next;
 printf("%c",p->data);
 count++;
 p=p->next;
 while(p!=NULL)
 {
  printf("->%c",p->data);
  p=p->next;
  count++;
 }
 return count;
}

void main()
{
 Linklist head;
 int count;
 head=(Linklist)malloc(sizeof(Linknode));
 creat_head_head(head);
 count=countnode_head_head(head);
 printf("\n节点个数为：%d\n",count);
}