#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct tele{
int num;
char name[20];
char tel_no[15];
char sim_no;
char e_addr[20];
struct tele *next;
};
char filename[20];
FILE *fp;
void mainmenu()
{
printf("***电话簿管理***\n");
printf("***1.office***\n");
printf("***2.person***\n");
printf("***3.business***\n");
printf("***0.exit****\n");
printf("请输入(0~3):");
printf("\n");
}
void submenu()
{
printf("****************\n");
printf("**1.显示电话簿**\n");
printf("**2.添加电话簿**\n");
printf("**3.修改电话簿**\n");
printf("**4.删除电话簿**\n");
printf("*****5.拨号*****\n");
printf("*0.返回上级菜单*\n");
printf("请输入(0~5):");
printf("\n");
}
void newbook()
{
struct tele one;
long s1;
scanf("%s",filename);
if((fp=fopen(filename,"w"))==NULL)
{
printf("\n不能建立通信录！");
exit(0);
}
fprintf(fp,"%10d %10s %20s %10s %20s","编号","姓名","号码","单键拨号号码","email地址");
printf("\n请输入编号、姓名、号码、单键拨号号码、email地址\n");
scanf("%d",one.num);
while(one.num!=0)
{
scanf("%s%s%s%s",one.name,one.tel_no,one.sim_no,one.e_addr);
fprintf(fp,"%10d %10s %20s %10s %20s\n",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
scanf("%d",one.num);
}
fclose(fp);
}

void deletei()
{

struct tele *head,*p1,*p2;
int num;
p1=head;
while(num!=p1->num&&p1->next!=NULL)
{p2=p1;p1=p1->next;}
if(num==p1->num)
{
if(p1==head)
head=p1->next;
else
p2->next=p1->next;
printf("delete:%d\n",num);
}
else
printf("%d not been found!\n",num);
}
void addi()
{
struct tele *head,*t,*p1,*p2,*p0;
//char name[20];
p1=head;
p0=t;
if(head==NULL)
{
head=p0;p0->next=NULL;
}
else
{
while(strcmp(p0->name,p1->name)!=0&&(p1->next!=NULL))
{
p2=p1;p1=p1->next;
}
if(p0->name<=p1->name)
{
if(head==p1)
head=p0;
else
p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;p0->next=NULL;
}
}
}
void showalli()
{
struct tele one;
printf("\n\n%20s\n","通信录");
while(!feof(fp))
{scanf("%d%s%s%s%s",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
printf("%--10d %--10s %--20s%--10s %20s",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
}
fclose (fp);
}
void change()
{
int k=0;
char namekey[8];
struct tele one;
printf("%s",namekey);
if((fp=fopen(filename,"r+"))==NULL)
{
printf("\n不能打开通信录！");
exit(0);
}
while(!feof(fp))
{
scanf("%d%s%s%s%s\n",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
if(!strcmp(namekey,one.name))
{
k=1;break;
}
}
if(k)
{
printf("\n\n已查到，记录为:");
printf("%--10d %--10s %--20s%--10s %20s",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
scanf("%d%s%s%s%s\n",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
fseek(fp,1,0);
printf("Id",ftell(fp));
fprintf(fp,"%--10d %--10s %--20s%--10s %20s",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
}
else
printf("\n\n对不起，查无此人。");
fclose(fp);
}
void call()
{
struct tele one ;
int n;
char ch,keyname[8];
printf("\n请输入姓名:");
scanf("%s",keyname);
while(!feof(fp))
{ ch=getchar();}
if((n<=14)&&(n>=0))
while(!feof(fp))
{scanf("%d%s%s%s%s",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
printf("%--10d %--10s %--20s%--10s %20s",one.num,one.name,one.tel_no,one.sim_no,one.e_addr);
}
}
void main()
{
static int menu=1;
int i=1;
char m,n,c;
while(i);
{
switch(menu)
{
case 1:
{
mainmenu();
scanf("%c",&n);
printf("%c",n);
switch(n)
{
case '1':
{
newbook();
menu=2;
}
break;
case '2':
{
newbook();
menu=2;
}
break;
case '3':
{
newbook();
menu=2;
}
break;
default:
{
printf("Are you sure exit?(Y/N)\n");
scanf("%c",&c);
printf("%c",c);
if(c=='Y')
i=0;
}
}
}
case 2:
{
submenu();

scanf("%c",&m);
printf("%c",m);
switch(m)
{
case'1':
{
showalli();
}
break;
case'2':
{
addi();
}
break;
case'3':
{
change();
}
break;
case'4':
{
deletei();
}
break;
case'5':
{
call();
}
break;
default:
break;
}
}break;
}
}
}

这就是我写的代码，但一直都有警告，希望大家帮忙改改！