#include<stdio.h>
#include<stdlib.h>
#include<string.h>

struct person
{
char name[8];
char tel[15];
char qq[12];
char schpro[50];
char addr[20];
};
char filename[23]="E:\\我的通讯录.txt";
FILE *fp;
void creat();
void output();
void search();
void append();
void modify();
void del();
void main(void)

{
int m;
creat();   
while(1)   
{
printf("\n\t\t*********欢迎使用通讯录信息管理系统*********\n\n");
printf("\n\t\t添加，请按1 查找，请按2");
printf("\n\t\t修改，请按3 删除，请按4");
printf("\n\t\t输出，请按5 退出，请按0");
printf("\n\t\t\n");
printf("\n\t\t********************************************\n\n");
printf("请选择(0--5):");
scanf("%d",&m);
if(m>=0&&m<=5)
{
switch(m)
{
case 1: append();
break;
case 2: search();
break;
case 3: modify();
break;
case 4: del();
break;
case 5: output();
break;
case 0: exit(1);
}
printf("\n\n操作完毕，请再次选择！");
}
else
printf("\n\n选择错误，请再次选择！");
}
}

/*输入模块creat( )： 创建通讯录的子函数。*/
void creat()
{
struct person one;
long s1;
/*printf("\n请输入通讯录文件名：");
scanf("%s",filename); */

if((fp=fopen(filename,"at+"))==NULL)
{
printf("\n不能建立通讯录！");
exit(1);
}
fprintf(fp,"%-10s%-20s%-20%-50s\n","姓名","电话号码","qq号码","学校和专业");
printf("\n请输入姓名、电话号码、qq号码及学校专业（以0结束）\n");
scanf("%s",one.name);
while(strcmp(one.name,"0"))
{
scanf("%s%s",one.tel,one.qq,one.schpro);
fprintf(fp,"%-10s%-20s%-50s\n",one.name,one.tel,one.qq,one.schpro);
scanf("%s",one.name);
}
fclose(fp);
}


/*输出模块output( )：输出通讯录中联系人通讯信息的子函数*/
void output()
{
struct person one;
if((fp=fopen(filename,"r"))==NULL)
{
printf("\n不能打开通讯录！");
exit(1);
}
printf("\n\n%20s\n","通 讯 录");
while(!feof(fp))
{
fscanf(fp,"%s%s%s%s\n",one.name,one.tel,one.qq,one.schpro);
printf("%-10s%-20s%-20%-50s",one.name,one.tel,one.addr);
}
fclose(fp);
}


/*添加模块append( )：向通讯录中添加某人通讯信息的子函数*/
void append()
{
struct person one;
if((fp=fopen(filename,"a"))==NULL)
{
printf("\n不能打开通讯录！");
exit(1);
}
printf("\n请输入添加的姓名、电话号码、qq号码及学校专业\n");
scanf("%s%s%s",one.name,one.tel,one.qq,one.schpro);
fprintf(fp,"%-10s%-20s%-50s\n",one.name,one.tel,one.qq,one.schpro);
fclose(fp);
}


/*查找模块search( )：在通讯录中查找某人通讯信息的子函数*/
void search()
{
struct person one;   
int k,j=0;
if((fp=fopen(filename,"rb"))==NULL)
{
printf("\n不能打开通讯录！");
exit(1);
}
printf("\n姓名查找请按1");
printf("\n电话号码查找请按2");
scanf("%d",&k);
switch(k)
{
case 1:
{
char namekey[8];printf("\n请输入姓名： ");
scanf("%s",namekey);
while(!feof(fp))
{
fscanf(fp,"%s%s%s%s\n",one.name,one.tel,one.qq,one.schpro);
if(!strcmp(namekey,one.name))
{
printf("\n\n已查到，记录为：");
printf("\n%-10s%-20s%-20s0%-50s",one.name,one.tel,one.qq,one.schpro);
j=1;
}
}
if(!j)
printf("\n\n对不起，通讯录中没有此人的记录。");
fclose(fp);
} break;
case 2:
{char telkey[15];printf("\n请输入电话号码： ");
scanf("%s",telkey);
while(!feof(fp))
{
fscanf(fp,"%s%s%s%s\n",one.name,one.tel,one.qq,one.schpro);
if(!strcmp(telkey,one.tel))
{
printf("\n\n已查到，记录为：");
printf("\n%-10s%-20s%-20s0%-50s",one.name,one.tel,one.qq,one.schpro);
j=1;
}
}
if(!j)
printf("\n\n对不起，通讯簿中没有此人的记录。");
fclose(fp);
} break;
}
}

/*修改模块modify( )：在通讯录中修改某人通讯信息的子函数*/
void modify()
{   
int m,k=0;
long offset;
char namekey[8];
struct person one;
printf("\n请输入姓名:");
scanf("%s",namekey);
if((fp=fopen(filename,"r+"))==NULL)
{   
printf("\n不能打开通讯录！");
exit(1);
}
while(!feof(fp))
{   
offset=ftell(fp);
fscanf(fp,"%s%s%s\n",one.name,one.tel,one.qq,one.schpro);
if(!strcmp(namekey,one.name))
{
k=1;
break;
}
}
if(k)
{   
printf("\n已查到，记录为：");
printf("\n%-10s%-18s%-50s",one.name,one.tel,one.qq,one.schpro);
printf("\n请输入新姓名、电话号码、qq号码及学校专业：");
scanf("%s%s%s",one.name,one.tel,one.qq,one.schpro);
fseek(fp,offset,SEEK_SET);
printf("%ld",ftell(fp));
fprintf(fp,"%-10s%-20s%-20s%-50s\n",one.name,one.tel,one.qq,one.schpro);
}
else
printf("\n对不起，通讯录中没有此人的记录。");
fclose(fp);
}


/*删除模块del( )：在通讯录中删除某人通讯信息的子函数*/
void del()
{   
int m,k = 0,flag;
long offset1,offset2;
char namekey[8], valid[4];
struct person one;
printf("\n请输入姓名:");
scanf("%s",namekey);
if((fp=fopen(filename,"r+"))==NULL)
{   
printf("\n不能打开通讯录！");
exit(1);
}
while(!feof(fp))
{   
offset1=ftell(fp);
fscanf(fp,"%s%s%s\n",one.name,one.tel,one.qq,one.schpro);
if(!strcmp(namekey,one.name))
{
k=1;
break;
if(k)
{
printf("\n已查到，记录为");
printf("\n%-10s%-20s%-20s%-50s",one.name,one.tel,one.qq,one.schpro);
printf("\n确实要删除,按1；不删除，按0：");
scanf("%d",&m);
if(m)
{
fseek(fp,offset1,SEEK_SET);
fprintf(fp,"%-10s%-20s%-20%-50s\n","","","","");
}
else
printf("\n对不起，通讯录中没有此人的记录。");
fclose(fp);
}
}
}
}