一个纠结的c语言问题（双向链表练习）

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<fstream.h>
#include<iostream.h>
struct address
{
char name[9];
char street[40];
char city[9];
char province[9];
char zip[7];
struct address *prior;
struct address *next;
}list_entry;
struct address *start;
struct address *last;
void enter(),display(),search(),save(),load();
main()
{
char s[80],choice;
struct address *info;
start=last=NULL;
for(;;)
{
switch(menue_select())
{
case 1:enter();break;
case 2:delete();break;
case 3:list();break;
case 4:search();break;
case 5:save();break;
case 6:load();break;
case 7:exit(0);
}
}
}

menue_select()
{
char *s[80];
int c;
printf("\t 请选择功能:\n\n");
printf("\t 1.输入通讯处：\n");
printf("\t 2.删除通讯处：\n");
printf("\t 3.列表显示：\n" );
printf("\t 4.查找：\n");
printf("\t 5.将文件存盘：\n");
printf("\t 6.将文件从盘中装入：\n");
printf("\t 7.退出：\n");
do{
printf("\n\t请按数字键选择：");
gets(s);
c=atoi(s);
}while(c<0||c>7);
return(c);
}
void enter()
{
struct address *info,dls_store();
for(;;)
{
info=(struct address *)malloc(sizeof(list_entry));
if(!info)
{
printf("\t内存已用完！\n");
return;
}
inputs("\t 请输入姓名：",info->name,8);
if(!*info->name) break;
inputs("\t 请输入街名：",info->street,39);
inputs("\t 请输入市名：",info->city,8);
inputs("请输入省名：",info->province,8);
inputs("请输入邮编：",info->zip,7);
*start=dls_store(info, start);
}
}
inputs(prompt,s,count)
char *prompt,*s;
int count;
{
char p[255];
do{
printf(prompt);
gets(p);
if(strlen(p)>count)
printf("\t 太长了！");
}while(strlen(p)>count);
strcpy(s,p);
}
struct address *dls_store(i,top)
struct address *i;
struct address *top;{
struct address *old,*p;
if(last==NULL)
{
i->next=NULL;
i->prior=NULL;
last=i;
return(i);
}
p=top;
old=NULL;
while(p){
if(strcmp(p->name,i->name)<0)
{
old=p;
p=p->next;
}
else
{
if(p->prior)
{
p->prior->next=i;
i->next=p;
i->prior=p->prior;
p->prior=i;
return(top);
}
i->next=p;
i->prior=NULL;
p->prior=i;
return(i);
}
}
old->next=i;
i->next=NULL;
i->prior=old;
last=i;
return(start);
}
delete()
{
struct address *info,*find();
char s[80];

printf("\t：请输入姓名：");
gets(s);
info=find(s);
if(info)
{
if(start==info)
{
start=info->next;
if(start)
start->prior=NULL;
else
last=NULL;
}


else
{
info->prior->next=info->next;
if(info!=last) info->next->prior=info->prior;
else last=info->prior;
}
free(info);
}
}
struct address *find(name)
char *name;
{

struct address *info,*start;
info=start;
while(info)
{
if(!strcmp(name,info->name))
return(info);
info=info->next;
}
printf("\t 未能找到此姓名!\n");
return(NULL);
}
list()
{
register int t;
struct address *info;
info=start;
while(info)
{
display(info);
info=info->next;
}
printf("\n\n");
}
void display(info)
struct address *info;
{
printf("\t%s\n",info->name);
printf("\t%s\n",info->street);
printf("\t%s\n",info->city);
printf("\t%s\n",info->province);
printf("\t%s\n",info->zip);
printf("\n\n");
}
void search()
{
char name[40];
struct address *info,*find();
printf("\t请给要找的姓名：");
gets(name);
if(!(info=find(name)))
printf("\t未找到！");
else
display(info);
}
void save()
{
register int t;
struct address *info;
FILE *fp;
if((fp=fopen("mlist","wb"))==NULL)
{
printf("\t文件不存在！");
exit(0);
}
printf("\t正在存入文件\n");
info=start;
while(info)
{
fwrite(info,sizeof(struct address),1,fp);
info=info->next;
}
fclose(fp);

}
void load()
{
register int;
struct address *info,*temp=NULL;
FILE *fp;
if((fp=fopen("mlist","wb"))==NULL)
{
printf("\t文件打不开!");
exit(1);
}
while(start)
{
info=start->next;
free(info);
start=info;
}
printf("\t正在装入文件！\n");
start=(struct address *)malloc(sizeof(struct address));
if(!start)
{
printf("\t内存已用完!\n");
return;
}
info=start;
while(!feof(fp))
{
if(1!=fread(info,sizeof(struct address),1,fp))
break;
info->next=(struct address *)malloc(sizeof(struct address));
if(!info->next)
{
printf("\t内存已用完!\n");
return;
}
info->prior=temp;
temp=info;
info=info->next;
}
temp->next=NULL;
last=temp;
start->prior=NULL;
fclose(fp);
}

编译之后 出现的是有大概14个warning and 1error
暂时不管warning 只看error
是这样子的
红色部分提示 是
error C2040: 'dls_store' : 'struct address *()' differs in levels of indirection from 'struct address ()'改如何解决
请高手支招