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#include<stdio.h>
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#include<stdlib.h>
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#include<conio.h>
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#include<dos.h>
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#include<string.h>
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#define LEN sizeof(struct addritem)
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#define FORMAT "%-15s%-20s%-10s%-15s%-30s%\n"//规定输出格式
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#define DATA addrinfo[i].name,addrinfo[i].occu,addrinfo[i].tel,addrinfo[i].email,addrinfo[i].address//结构体数组元素中所有成员，方便引用
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struct addritem
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{
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char name[10];
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char occu[10];
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char address[35];
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char tel[15];
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char email[25];
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};
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struct addritem addrinfo[100];
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void input();
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void search();
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void update();
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void del();
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void display();
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void sort();
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void menu();
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void menu()
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{
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system("cls");
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printf("\n\n\n\n\n");
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printf("\t\t|----------contact--------|\n");
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printf("\t\t|0.exit |\n");
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printf("\t\t|1.input record |\n");
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printf("\t\t|2.search record |\n");
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printf("\t\t|3.update record |\n");
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printf("\t\t|4.delete record |\n");
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printf("\t\t|5.sort |\n");
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printf("\t\t|6.display |\n");
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printf("\t\t|-------------------------|\n\n");
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printf("\t\t\tchoose(0-6):");
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}
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int main()
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{
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int n;
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menu();
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scanf("%d",&n);
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while(n)
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{
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switch(n)
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{ case 1: input(); break;
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case 2: search(); break;
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case 3: update(); break;
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case 4: del(); break;
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case 5: sort(); break;
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case 6: display(); break;
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default:break;
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}
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getch();
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menu();
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scanf("%d",&n);
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}
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}
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void input()
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{
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int i,count=0;//count用来记录通讯录中联系人的个数
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char ch[2];//用来记录用户的输入
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FILE *fp;
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if((fp=fopen("data.txt","a+"))==NULL)//创建一个文件，如果文件打开失败则返回空值
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{
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printf("can not open\n");
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return;
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}
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while(!feof(fp))//判断文件是否结束，如果没有调用fread函数统计记录条数
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{
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if(fread(&addrinfo[count],LEN,1,fp)==1)//LEN统计结构体类型addritem中变量所有成员的长度，即所占的字节数
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count++;
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}
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fclose(fp);
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if(count==0)
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printf("No contact record!\n");
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else
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{
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system("cls");
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display();
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}
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if((fp=fopen("data.txt","wb"))==NULL)
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{
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printf("can not open!\n");
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return;
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}
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for(i=0;i<count;i++)
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fwrite(&addrinfo[i],LEN,1,fp);//将addrinfo的结构体数组写入磁盘文件
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printf("please input(y/n)");
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scanf("%s",ch);
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while(strcmp(ch,"y")==0||(ch,"Y")==0)//字符串的比较函数
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{ printf("name:");
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scanf("%s",&addrinfo[count].name);//count变量记录结构体数组当前 可以输入的位置
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for(i=0;i<count;i++)
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if(strcmp(addrinfo[i].name,addrinfo[count].name)==0)
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{ printf("the name already exists,press any key to continue.");
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getch();
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fclose(fp);
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return;
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} //若通讯录找不到联系人就输入其他信息
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printf("occupation:");
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scanf("%s",&addrinfo[count].occu);
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printf("telephone:");
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scanf("%s",&addrinfo[count].tel);
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printf("address:");
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scanf("%s",&addrinfo[count].address);
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printf("email:");
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scanf("%s",&addrinfo[count].email);
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if(fwrite(&addrinfo[count],LEN,1,fp)!=1)//新录入的联系人信息写入磁盘文件
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{printf("can not save thr record!");
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getch();
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}
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else
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{printf("%s saved!\n",addrinfo[count].name);
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count++;
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}
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printf("continue?(y/n):");
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scanf("%s",ch);
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}
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fclose(fp);
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printf("ok\n");
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}
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void search()
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{
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FILE *fp;
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int i,count=0;
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char ch[2],name[15];
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if((fp=fopen("data.txt","r"))==NULL)
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{
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printf("can not open\n");
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return;
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}
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while(!feof(fp))//判断是否到达文件尾部，如果文件没有结束使用if语句读取
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{
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if(fread(&addrinfo[count],LEN,1,fp)==1)
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count++;
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}
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fclose(fp);
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if(count==0)
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{
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printf("no record\n");
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return;
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}
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printf("please input the name:");
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scanf("%s",name);
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for(i=0;i<count;i++)
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if(strcmp(name,addrinfo[i].name)==0)
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{
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printf("find the contact,display?(y/n)");
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scanf("%s",ch);
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if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0)
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{
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printf("name occupation telephone email addresse\t\n");
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printf(FORMAT,DATA);
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}break;
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}
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}
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void update()
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{
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FILE *fp;
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int i,j,count=0;
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char name[15];
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if((fp=fopen("data.txt","r+"))==NULL)
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{
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printf("can not open");
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return;
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}
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while(!feof(fp)){
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printf("%d",count);
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if(fread(&addrinfo[count],LEN,1,fp)==1)
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count++;
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}
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if(count==0)
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{
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printf("no record\n");
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fclose(fp);
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return;
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}
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display();
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printf("please input the name of the contact which you want to update\n");
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printf("update name:");
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scanf("%s",&name);
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for(i=0;i<count;i++)
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{ if(strcmp(name,addrinfo[i].name)==0)
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{printf("find the contact!you can update!\n");
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printf("name:");
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scanf("%s",&addrinfo[i].name);
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printf("occuption:");
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scanf("%s",&addrinfo[i].occu);
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printf("telephone：");
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scanf("%s",&addrinfo[i].tel);
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printf("email:");
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scanf("%s",&addrinfo[i].email);
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printf("address:");
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scanf("%s",&addrinfo[i].address);
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printf("update successful");//信息在数组中进行修改，需将信息写回磁盘中
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if((fp=fopen("data.txt","wb"))==NULL)
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{
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printf("can not open\n");
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return;
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}
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for(j=0;j<count;j++)
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if(fwrite(&addrinfo[j],LEN,1,fp)!=1)
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{
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printf("can not save!");
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getch();
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}
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fclose(fp);
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return;
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}
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}printf("not find contact");//若未找到联系人信息
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}
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void del()
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{
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FILE *fp;
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int i,j,count=0;
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char ch[2];
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char name[15];
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if((fp=fopen("data.txt","r+"))==NULL)
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{
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printf("can not open\n");
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return;
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}
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while(!feof(fp))
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if(fread(&addrinfo[count],LEN,1,fp)==1)
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count++;
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fclose(fp);
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if(count==0)
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{
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printf("no record!\n");
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return;
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}
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display();
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printf("please input the name");
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scanf("%s",&name);
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for(i=0;i<count;i++)
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{
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if(strcmp(name,addrinfo[i].name)==0)
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{
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printf("find the contact,del?(y\n)");
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scanf("%s",ch);
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if(strcmp(ch,"Y")||strcmp(ch,"y")==0)
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for(j=i;j<count;j++)//i为所需删的联系人，需将i后的联系人都前移一个位置
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addrinfo[j]=addrinfo[j+1];
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count--;
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if((fp=fopen("data.txt","w"))==NULL)
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{
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printf("can not open");
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return;
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}for(j=0;j<count;j++)
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if(fwrite(&addrinfo[j],LEN,1,fp)!=1)
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{
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printf("can not save!\n");
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getch();
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}
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fclose(fp);
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printf("del successfully!\n");
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return;
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}
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}
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printf("not find the contact");
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}
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void sort()
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{
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FILE *fp;
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struct addritem t;
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int i,j,count=0;
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if((fp=fopen("data.txt","r+"))==NULL)
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{
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printf("can not open\n");
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return;
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}
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while(!feof(fp))
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if(fread(&addrinfo[count],LEN,1,fp)==1)
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count++;
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fclose(fp);
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if(count==0)
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{
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printf("no record!\n");
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return;
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}
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for(i=0;i<count-1;i++)
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for(j=i+1;j<count;j++)
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if(strcmp(addrinfo[i].name,addrinfo[j].name)>0)
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{
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t=addrinfo[i];
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addrinfo[i]=addrinfo[j];
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addrinfo[j]=t;
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}
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if((fp=fopen("data.txt","w"))==NULL)
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{
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printf("can not open\n");
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return;
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}
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for(i=0;i<count;i++)
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if(fwrite(&addrinfo[i],LEN,1,fp)!=1)
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{
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printf("can not save!\n");
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getch();
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}
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fclose(fp);
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printf("successfully!\n");
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}
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void display()
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{
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FILE *fp;
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int i,count=0;
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fp=fopen("data.txt","r");
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while(!feof(fp))
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{
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if(fread(&addrinfo[count],LEN,1,fp)==1)
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count++;
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}
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fclose(fp);
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printf("name occupation telephone email address\t\n");
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for(i=0;i<count;i++)
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printf(FORMAT,DATA);
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}
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