address_list.txt

用C写的一个通讯录小程序

用C写的通讯录程序
#include<stdlib.h>
#include<string.h>
#include<conio.h>
#include<stdio.h>
#include<dos.h>
struct addr             /*通讯地址结构定义*/
{   char post_num[10];  /*邮编*/
    char addr[40];      /*家庭地址*/
};
struct birth      /*出生年月结构定义*/
{   int year;     /*年份*/
    int month;    /*月份*/
    int day;      /*日期*/
};
struct friend1     /*电子通讯录结构定义*/
{   int number;       /*序号*/
    char name[20];     /*姓名*/
    char sex;             /*性别*/
    struct birth birth;   /*出生年月*/
    struct addr addr;     /*通信地址*/
    char telephone[13];   /*联系电话*/
}friends[50];
FILE *fp;
int i;
void Data_Load()
{   int j;
    long k;
    fp=fopen("friend.txt","r+t");   /*打开文件friend.txt*/
    if(fp!=NULL)
    {   for(i=1;i<50;i++)
            {   j=fgetc(fp);
                if(j==EOF)    /*判断是否到了文件尾*/
                    return;
                k=i-1;
                fseek(fp,k*sizeof(struct friend1),SEEK_SET);
                fread(&friends[i],sizeof(struct friend1),1,fp);/*从文件中读取一条记录*/
             }
    }
    else
    {   fp=fopen("friend.txt","w");
        i=1;
    }
}
void Data_Show(int j)    /*打印记录的详细资料*/
{
    printf("\n\n\tNo:%3d\n",friends[j].number);
    printf("\n\tBirthday(y/m/d):%4d%2d%2d",friends[j].birth.year,friends[j].birth.month,friends[j].birth.day);
    printf("\n\tPostnum:%-10s",friends[j].addr.post_num);
    printf("\n\taddress:%-40s",friends[j].addr.addr);
    printf("\n\tTele%-13s",friends[j].telephone);
}
void Data_ｉｎｐｕｔ(int j)    /*记录插入函数*/
{
    fflush(stdin);
    friends[j].number=j;
    printf("\n\n\n\tNo %d record",j);
    printf("\n\n\tName:");      /*读入姓名*/
    scanf("%s",friends[j].name);
    fflush(stdin);
    printf("\n\tSex(m/f):");    /*读入性别*/
    scanf("%c",&friends[j].sex);
    printf("\n\t---birthday---");   /*读入出生年月*/
    printf("\n\tyear:");
    scanf("%d",&friends[j].birth.year);
    printf("\n\t\tmonth:");
    scanf("%d",&friends[j].birth.month);
    printf("\n\t\tday:");
    scanf("%d",&friends[j].birth.day);
    printf("\n\tPost_number:");   /*读入邮编*/
    scanf("%s",friends[j].addr.post_num);
    printf("\n\tAddress:");    /*读入家庭地址*/
    scanf("%s",friends[j].addr.addr);
    printf("\n\ttelephone:");    /*读入联系电话*/
    scanf("%s",friends[j].telephone);
}
void Data_Save()
{
    int j;
    fp=fopen("friend.txt","w");
    for(j=1;j<=i;j++)
    {   fwrite(&friends[j],sizeof(struct friend1),1,fp);
    }
}
void main()
{
    int j,k;
    char ch;
    char *search_name;
    clrscr();
    Data_Load();
    i--;
    do
    {   printf("\n\n\n\tFunction choose:");
        printf("\n\t1.Read");
        printf("\n\t2.Append");
        printf("\n\t3.Delete");
        printf("\n\t4.Search");
        printf("\n\t5.Insert");
        printf("\n\t6.Save and Exit");
        printf("\n\t7.Quit");
        printf("\n\n");
        printf("\tChoice:");
        ch=getche();
        switch(ch)
        {   case '1': j=1;     /*显示通讯录中的所有记录*/
             while(getch()!=0x1b&&j<=i) Data_Show(j++);
             if(j>i) printf("\n\tEnd of e_note\n");
                break;
            case '2':          /*增加通讯录中的记录*/
              while(getch()!=0x1b&&i<50)
              {   i++;
                  Data_ｉｎｐｕｔ(i);
              }
              if(i==50)printf("\n\te_note is filled\n");
                  break;
            case '3':           /*删除通讯录中的记录*/
              if(i<1)
              {   printf("\n\tNo records\n");
                  break;
              }
              printf("\n\tDelete No:");    /*读入删除位置*/
              scanf("%d",&k);
              for(j=k;j<i;j++)   /*删除位置前的元素顺序前移*/
              {   strcpy(friends[j].name,friends[j+1].name);
                  friends[j].sex=friends[j=1].sex;
                  friends[j].birth.year=friends[j+1].birth.year;
                  friends[j].birth.month=friends[j+1].birth.month;
                  friends[j].birth.day=friends[j+1].birth.day;
                  strcpy(friends[j].addr.post_num,friends[j+1].addr.post_num);
                  strcpy(friends[j].addr.addr,friends[j+1].addr.addr);
                  strcpy(friends[j].telephone,friends[j+1].telephone);
              }
              i--;      /*元素总数减1*/
              break;
            case '4':      /*通讯录查询功能*/
              printf("\n\tPlease ｉｎｐｕｔ name:");
              gets(search_name);
              for(j=1;j<=i;j++)
              {
                  if(strcmp(search_name,friends[j].name)==0)  /*比较字符串*/
                  {   Data_Show(j);  /*查询成功，打印记录结束循环*/
                       break;
                  }
              }
              if(j>1)     /*查询失败*/
              printf("\n\t No such records");
              break;
            case '5':
              printf("\n\tInsert No:");     /*录入插入位置*/
              scanf("%d",&k);
              for(j=i+1;j<k;j++)  /*插入位置后的元素顺序后移*/
              {   strcpy(friends[j].name,friends[j-1].name); /*交换元素内容*/
                  friends[j].sex=friends[j-1].sex;
                  friends[j].birth.year=friends[j-1].birth.year;
                  friends[j].birth.month=friends[j-1].birth.month;
                  friends[j].birth.day=friends[j-1].birth.day;
                  strcpy(friends[j].addr.post_num,friends[j-1].addr.post_num);
                  strcpy(friends[j].addr.addr,friends[j-1].addr.addr);
                  strcpy(friends[j].telephone,friends[j-1].telephone);
              }
              Data_ｉｎｐｕｔ(k);
              i++;
              break;
            case '6': Data_Save();
              exit(0);  break;
            case '7': printf("\n\tDo you want to save e_note:(y/n)");
              ch=getch();
              if(ch=='y') Data_Save();
              fclose(fp);
              exit(0);
            default: printf("Please choose num 1-4\n");
         }
    }while(1);
}