程序代码：

#include <stdio.h>
#include <stdlib.h>
struct shuzi {
             int n;
             int count;
             struct shuzi * p;
              };
struct shuzi * digui(int n,struct shuzi *q);
void PRINTF(struct shuzi *p);

int main(void)
{
    struct shuzi *q;
    int n;
    q = NULL;

    while(scanf("%d",&n) == 1)
        q = digui(n,q);
    PRINTF(q);
    return 0;
}
struct shuzi * MALLOC(void);
struct shuzi * digui(int n,struct shuzi *q)
{
    if(q == NULL)
    {
          q = MALLOC();
          q->n = n;
          q->count = 1;
          q->p = NULL;
    }
    else if(q->n == n)
        q->count++;
    else
        q->p = digui(n,q->p);

    return q;
}

struct shuzi * MALLOC(void)
{
    return (struct shuzi *)malloc(sizeof(struct shuzi));
}

void PRINTF(struct shuzi *p)
{
    if(p != NULL)
    {
       PRINTF(p->p);
       printf("%d %d\n",p->n,p->count);
    }
}

[此贴子已经被作者于2017-2-14 23:17编辑过]

程序代码：

void my_free(Node* head)
{
    Node* p=head;
    
    if (head==NULL)
        return ;

    while (p->next)
    {
        p=p->next;
        free(head);
        head=p;
    }

    free(head);
}