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#include<stdio.h>
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#include<stdlib.h>
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#include<string.h>
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#define SIZE 50
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struct TX{
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char name[10];
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char jiguan[20];
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char d1[20],d2[20];
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char ema[30];
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}inf [SIZE];
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void luru(){
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system("cls"); //清屏
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int i,n;
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FILE *fp;
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fp=fopen("date.dat","wb");//创建二进制文件进行写
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//rewind(fp);
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printf("\t\t\t\t\t\t请输入需要录入的个数：");
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scanf("%d",&n);
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for(i=1;i<=n;i++){
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printf("\t\t\t\t\t\t请输入录入的第%d个人的姓名：",i);
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scanf("%s",inf[i].name);
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printf("\t\t\t\t\t\t请输入籍贯：");
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scanf("%s",inf[i].jiguan);
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printf("\t\t\t\t\t\t请输入电话号码1：");
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scanf("%s",inf[i].d1);
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printf("\t\t\t\t\t\t请输入电话号码2: ");
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scanf("%s",inf[i].d2);
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printf("\t\t\t\t\t\t请输入电子邮箱：");
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scanf("%s",inf[i].ema);
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printf("\n\n\n");
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fwrite(&inf[i],sizeof(struct TX),1,fp);//将信息写入二进制文件
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}if(n>=1)printf("\t\t\t\t\t\t信息录入完成！\n\n\n\n");
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else
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printf("\t\t\t\t\t\t输入错误！\n\n\n\n");
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fclose(fp);//打开文件后要关闭文件，否则可能会造成数据的丢失
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}
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void addmore(){
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system("cls"); //清屏
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int i,n;
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FILE *fp;
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fp=fopen("date.dat","ab+");//打开二进制文件进行读，写，追加
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//rewind(fp);
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printf("\t\t\t\t\t\t请输入需要增加的个数：");
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scanf("%d",&n);
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for(i=1;i<=n;i++){
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printf("\t\t\t\t\t\t请输入增加的第%d个人的姓名：",i);
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scanf("%s",inf[i].name);
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printf("\t\t\t\t\t\t请输入籍贯：");
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scanf("%s",inf[i].jiguan);
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printf("\t\t\t\t\t\t请输入电话号码1：");
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scanf("%s",inf[i].d1);
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printf("\t\t\t\t\t\t请输入电话号码2: ");
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scanf("%s",inf[i].d2);
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printf("\t\t\t\t\t\t请输入电子邮箱：");
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scanf("%s",inf[i].ema);
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printf("\n\n\n");
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fwrite(&inf[i],sizeof(struct TX),1,fp);//将信息写入二进制文件
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}if(n>=1)printf("\t\t\t\t\t\t信息录入完成！\n\n\n\n");
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else
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printf("\t\t\t\t\t\t输入错误！\n\n\n\n");
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fclose(fp);//打开文件后要关闭文件，否则可能会造成数据的丢失
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}
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void browse(){
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system("cls");
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FILE *fp;int i=0;
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fp=fopen("date.dat","rb");//打开二进制文件进行只读；
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printf("\t\t\t****************************************************************\n");
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printf("\t\t\t***** 信息列表 *****\n");
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printf("\t\t\t*****------------------------------------------------------*****\n");
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for(i=0;fread(&inf[i],sizeof(struct TX),1,fp)==1;i++){//从二进制文件中读出信息。若fread(&inf[i],sizeof(struct TX),1,fp)！=1代表文件到末尾。
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printf("\t\t\t*****姓名：%s\n",inf[i].name);
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printf("\t\t\t*****籍贯：%s\n",inf[i].jiguan);
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printf("\t\t\t*****电话号码1：%s\n",inf[i].d1);
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printf("\t\t\t*****电话号码2：%s\n",inf[i].d2);
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printf("\t\t\t*****邮箱：%s\n\n\n\n",inf[i].ema);
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}printf("\n\n\n");
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fclose(fp);
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}
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void change(){
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system("cls");
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FILE *fp;
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char a[20],b[20];
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int i,flag=0,n,f=0;
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fp=fopen("date.dat","rb");//打开二进制文件进行只读；
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printf("\t\t\t\t\t\t请输入需要修改信息的姓名：");
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scanf("%s",a);
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for(i=0;fread(&inf[i],sizeof(struct TX),1,fp)==1;i++){
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if(strcmp(a,inf[i].name)==0){//strcmp为比较函数，若a=inf[i].name则返回0；
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printf("\t\t\t\t\t\t当前信息：\n");
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printf("\t\t\t\t\t\t姓名：%s\n",inf[i].name);
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printf("\t\t\t\t\t\t籍贯：%s\n",inf[i].jiguan);
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printf("\t\t\t\t\t\t电话号码1：%s\n",inf[i].d1);
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printf("\t\t\t\t\t\t电话号码2：%s\n",inf[i].d2);
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printf("\t\t\t\t\t\t邮箱：%s\n\n\n",inf[i].ema);
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flag=1;
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break;
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}
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}fclose(fp);
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fp=fopen("date.dat","rb+");
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fseek(fp,i*sizeof(struct TX),0);//将文件指针移到需要改变数据的位置，否则会出错
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if(flag==0)printf("\t\t\t\t\t\t输入错误!\n\n\n\n\n") ;
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if(flag==1){
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printf("\t\t\t请输入需要修改的信息：1.姓名 2.籍贯 3.电话号码1 4.电话号码2 5.邮箱 6.不需要继续修改了\n");
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printf("\t\t\t\t\t\t修改信息:");
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for(;f==0;){
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scanf("%d",&n);
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switch(n){
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case 1:printf("\t\t\t\t\t\t将姓名修改为：");
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scanf("%s",inf[i].name);
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printf("\n");break;
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case 2:printf("\t\t\t\t\t\t将籍贯修改为：");
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scanf("%s",inf[i].jiguan);printf("\n");break;
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case 3:printf("\t\t\t\t\t\t将电话号码1修改为：");
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scanf("%s",inf[i].d1);printf("\n");break;
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case 4:printf("\t\t\t\t\t\t将电话号码2修改为：");
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scanf("%s",inf[i].d2);printf("\n");break;
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case 5:printf("\t\t\t\t\t\t将邮箱修改为：");
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scanf("%s",inf[i].ema);printf("\n");break;
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case 6:f=1;printf("\n\n\n");break;
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}if(n!=6){
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printf("\t\t\t\t\t\t还需修改的信息是：");
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fwrite(&inf[i],sizeof(struct TX),1,fp);//将修改后的信息写入文件
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}
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}
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fclose(fp);
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}
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}
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void del(){
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system("cls");
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FILE *fp;
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int i,j,flag=1;
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char a[20],n;
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fp=fopen("date.dat","rb");//以只读的方式打开文件
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printf("\t\t\t\t\t\t请输入要删除的联系人：");
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scanf("%s",a);
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for(i=0;fread(&inf[i],sizeof(struct TX),1,fp)==1;i++){//从文件中读取信息
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if(strcmp(a,inf[i].name)==0)flag=0;//比较
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}
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if(flag==1){
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printf("\t\t\t\t\t\t输入错误，此联系人不存在！\n\n\n\n");
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} if(flag==0){
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printf("\t\t\t\t\t\t确定删除请输入Y，否则输入N：");
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getchar();
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scanf("%c",&n);
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if(n=='N')printf("\t\t\t\t\t\t删除失败！\n\n\n");
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if(n=='Y'){
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fp=fopen("date.dat","wb+");//打开新二进制文件进行读，写 ，将原有信息覆盖。（替换掉原文件）
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for(j=0;j<i;j++){
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if(strcmp(a,inf[j].name)!=0)fwrite(&inf[j],sizeof(struct TX),1,fp);//将除了要删除的姓名外的信息写入文件；
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}printf("\t\t\t\t\t\t删除成功！\n\n\n\n");
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}else
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printf("\t\t\t\t\t\t输入错误！\n\n\n\n");
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}
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fclose(fp);
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}
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void search(){
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system("cls");
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FILE *fp;
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int i,flag=0;
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char a[20];
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fp=fopen("date.dat","rb");//以只读方式打开二进制文件
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rewind(fp); //将指针指向文件开头，从文件开头查找
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printf("\t\t\t\t\t\t请输入需要查询信息的姓名：");
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scanf("%s",a);
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for(i=0;fread(&inf[i],sizeof(struct TX),1,fp)==1;i++){
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if(strcmp(a,inf[i].name)==0){//找到对应的信息则输出
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printf("\n\n\n");
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printf("\t\t\t\t\t\t------------------------\t\t\t\n");
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printf("\t\t\t\t\t\t姓名：%s\n",inf[i].name);
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printf("\t\t\t\t\t\t籍贯：%s\n",inf[i].jiguan);
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printf("\t\t\t\t\t\t电话号码1：%s\n",inf[i].d1);
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printf("\t\t\t\t\t\t电话号码2：%s\n",inf[i].d2);
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printf("\t\t\t\t\t\t邮箱：%s\n",inf[i].ema);
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printf("\t\t\t\t\t\t------------------------\t\t\t\n\n\n\n\n");
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flag=1;
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break;
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}
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}if(flag==0)printf("\t\t\t\t\t\t输入错误！\n\n\n");
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fclose(fp);
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}
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int main(){
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int n;
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while(1){
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printf("\t\t\t\t\t\t**************\t\t\t\n");
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printf("\t\t\t\t\t\t通讯录管理系统\t\t\t\n");
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printf("\t\t\t\t\t\t 0.录入信息 \t\t\t\n");
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printf("\n");
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printf("\t\t\t\t\t\t 1.增加信息 \t\t\t\n");
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printf("\n");
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printf("\t\t\t\t\t\t 2.浏览信息 \t\t\t\n");
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printf("\n");
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printf("\t\t\t\t\t\t 3.查询信息 \t\t\t\n");
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printf("\n");
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printf("\t\t\t\t\t\t 4.修改信息 \t\t\t\n");
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printf("\n");
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printf("\t\t\t\t\t\t 5.删除信息 \t\t\t\n");
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printf("\n");
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printf("\t\t\t\t\t\t 6.退出系统 \t\t\t\n");
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printf("\t\t\t\t\t\t**************\t\t\t\n");
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printf("\t\t\t\t\t\t请输入操作(1-6)：");
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scanf("%d",&n);
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switch(n){
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case 0:luru();break;
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case 1:addmore();break;
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case 2:browse();break;
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case 3:search();break;
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case 4:change();break;
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case 5:del();break;
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case 6:printf("\n\n\n\n");
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printf("\t\t\t\t\t\t**************\t\t\t\n\n\n");
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printf("\t\t\t\t\t\t感谢您的使用 再见！\n\n\n");
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printf("\t\t\t\t\t\t**************\n\n\n\n\n");
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return 0;
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}
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}
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return 0;
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}
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