程序代码：

#include<stdio.h>
#include<stdlib.h>
struct arraylist{
  int data;
  struct arraylist *next;
};

 typedef struct arraylist list;

 list *head,*work,*end;

 list *newlist();

 int print_list(list *);

 int delet_list(list *);

 int i,equal;;

 int main(){
   printf("请依次输入您需要判断的数字请以-1结束\n");
   list *start;
   start=newlist();
   print_list(head);
   delet_list(head);
   return 0;

 }

 list *newlist(){
   head=(list *)malloc(sizeof(list));
   head->next=NULL;
   end=head;
   scanf("%d",&i);
   while(i!=-1){
     work=(list *)malloc(sizeof(list));
     work->data=(int)i;
     work->next=NULL;
     end->next=work;
     end=work;
     scanf("%d",&i);
   }
   return head;

 }

 int print_list(list *head){
    work=head->next;
    if(work==NULL)
     printf("您没有输入任何数字\n");
    else{
      printf("您输入的数字分别是:");
        do{
            printf("%d,",work->data);
            work=work->next;

          }while(work);
    }
    printf("\n");
    return 0;

 }

 int delet_list(list *head){

   list *p,*q;
   end=head->next;
   while(end){
       work=end->next;
       p=end;
       while(work){
           if(work->data==end->data){
               p->next=work->next;
               q=work;
               work=work->next;
               free(q);
           }else{
               p=p->next;
               work=work->next;
           }
       }
       end=end->next;
   }
   work=head->next;
   printf("删除相同的数后结果为:");
   do{
      printf("%d,",work->data);
      work=work->next;

     }while(work);
    printf("\n");
   return 0;

 }
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