通訊錄(三)(檔案儲存)
阿新 • • 發佈:2018-11-01
動態通訊錄
上篇部落格介紹了動態通訊錄,本篇繼續進一步將動態通訊錄儲存在檔案裡
載入資訊
void LoadContact(pContact pc)
{
FILE *pf = fopen("contact.dat.txt", "rb");
PeoInfo tmp = { 0 };
int i = 0;
if (pf == NULL)
{
perror("open file for read");
exit(EXIT_FAILURE);
}
while(fread(&tmp,sizeof (PeoInfo),1,pf))
{//載入
if (Check(pc) == 0)
{
exit(EXIT_FAILURE);
}
pc->data[pc->sz] = tmp;
pc->sz++;
}
fclose(pf);
pf = NULL;
}
增加聯絡人
void AddContact(pContact pc)
{
assert(pc);
if (Check(pc) == 0)
{
return;
}
printf("請輸入姓名:\n" );
scanf("%s", pc->data[pc->sz].name);
printf("請輸入年齡:\n");
scanf("%d", &pc->data[pc->sz].age);
printf("請輸入性別:\n");
scanf("%s", pc->data[pc->sz].sex);
printf("請輸入電話:\n");
scanf("%s", pc->data[pc->sz].tel);
printf("請輸入地址:\n" );
scanf("%s", pc->data[pc->sz].add);
pc->sz++;
printf("新增成功\n");
}
刪除聯絡人
static int Find(pContact pc,char name[])//static可以有效的保護程式碼
{
int i = 0;
assert(pc);
for (i = 0; i < pc->sz; i++)
{
if (strcmp(name, pc->data[i].name) == 0)
{
return i;//找到了返回下標
}
}
return -1;//沒找到
}
void DelContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int j = 0;
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通訊錄為空,無法刪除\n");
return;
}
printf("請輸入要刪除的人的姓名:\n");
scanf("%s", name);
//1.查詢位置
pos=Find(pc, name);
if (pos == -1)
return;
//2.刪除
for (j = pos; j < pc->sz - 1; j++)
{
pc->data[j] = pc->data[j + 1];
}
pc->sz--;
printf("刪除成功\n");
}
查詢聯絡人
void SearchContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通訊錄為空,無法查詢\n");
return;
}
printf("請輸入要查詢的人的姓名:\n");
scanf("%s", name);
//查詢位置
pos = Find(pc, name);
if (pos == -1)
{
printf("要查詢的人不存在\n");
return;
}
else
{
printf("%10s\t%4s\t%5s\t%12s\t%20s\n", "name", "age", "sex", "tel", "add");
printf("%10s\t%4d\t%5s\t%12s\t%20s\n", pc->data[pos].name, pc->data[pos].age, pc->data[pos].sex, pc->data[pos].tel, pc->data[pos].add);
}
}
修改聯絡人
void ModifyContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通訊錄為空,無法修改\n");
return;
}
printf("請輸入要修改的人的姓名:\n");
scanf("%s", name);
//查詢
pos = Find(pc, name);
if (pos == -1)
{
printf("要修改的人不存在\n");
return;
}
else
{
printf("請輸入姓名:\n");
scanf("%s", pc->data[pos].name);
printf("請輸入年齡:\n");
scanf("%d", &pc->data[pos].age);
printf("請輸入性別:\n");
scanf("%s", pc->data[pos].sex);
printf("請輸入電話:\n");
scanf("%s", pc->data[pos].tel);
printf("請輸入地址:\n");
scanf("%s", pc->data[pos].add);
printf("修改成功\n");
}
}
排序
void SortContact(pContact pc)
{
int i = 0;
int j = 0;
char tmp = 0;
int flag = 0;
assert(pc);
for (i = 0; i < pc->sz - 1; i++)
{
for (j = 0; j < pc->sz - 1 - i; j++)
{
if (strcmp(pc->data[j].name, pc->data[j + 1].name) > 0)
{
PeoInfo tmp = pc->data[j];
pc->data[j] = pc->data[j + 1];
pc->data[j + 1] = tmp;
flag = 1;
}
}
if (flag == 0)
return;
}
printf("排序成功!\n");
}
清空
void EmptyContact(pContact pc)
{
assert(pc);
pc->sz = 0;//清空
}
顯示
void ShowContact(pContact pc)
{
int i = 0;
assert(pc);
printf("%10s\t%4s\t%5s\t%12s\t%20s\n","name","age","sex","tel","add");
for (i = 0; i < pc->sz; i++)
{
printf("%10s\t%4d\t%5s\t%12s\t%20s\n", pc->data[i].name, pc->data[i].age, pc->data[i].sex, pc->data[i].tel, pc->data[i].add);
}
}
儲存資訊
void SaveContact(pContact pc)
{
FILE *pf=fopen("contact.dat.txt", "wb");
int i = 0;
if (pf == NULL)
{
perror("open file for save");
exit(EXIT_FAILURE);
}
for (i = 0; i < pc->sz; i++)
{
fwrite(pc->data + i, sizeof(PeoInfo), 1, pf);
}
fclose(pf);
pf = NULL;
}
Contact.h
#ifndef __CONTACT_H__
#define __CONTACT_H__
#include<stdio.h>
#include<string.h>
#include<assert.h>
#include<stdlib.h>
#define NAME_MAX 20
#define SEX_MAX 5
#define TEL_MAX 12
#define ADD_MAX 25
#define DATA_MAX 1000
#define DEFAULT_SZ 3
typedef struct PeoInfo
{
char name[NAME_MAX];
int age;
char sex[SEX_MAX];
char tel[TEL_MAX];
char add[ADD_MAX];
}PeoInfo;
typedef struct Contact
{
PeoInfo *data;//資料存放的位置
int sz;//表示當前有sz個有效資料
int capacity;//容量
}Contact, *pContact;
void InitContact(pContact pc);
void AddContact(pContact pc);
void DelContact(pContact pc);
void SearchContact(pContact pc);
void ModifyContact(pContact pc);
void SortContact(pContact pc);
void ShowContact(pContact pc);
void EmptyContact(pContact pc);
void DestroyContact(pContact pc);
void LoadContact(pContact pc);
void SaveContact(pContact pc);
#endif // __CONTACT_H__
Contact.c
#define _CRT_SECURE_NO_WARNINGS 1
#include"Contact.h"
void LoadContact(pContact pc)
{
FILE *pf = fopen("contact.dat.txt", "rb");
PeoInfo tmp = { 0 };
int i = 0;
if (pf == NULL)
{
perror("open file for read");
exit(EXIT_FAILURE);
}
while(fread(&tmp,sizeof(PeoInfo),1,pf))
{
if (Check(pc) == 0)
{
exit(EXIT_FAILURE);
}
pc->data[pc->sz] = tmp;
pc->sz++;
}
fclose(pf);
pf = NULL;
}
void InitContact(pContact pc)
{
assert(pc);
pc->sz = 0;
pc->data = (PeoInfo*)malloc(DEFAULT_SZ * sizeof(PeoInfo));
pc->capacity = DEFAULT_SZ;
LoadContact(pc);//讀檔案
}
void DestroyContact(pContact pc)
{
free(pc->data);
pc->data = NULL;
pc->capacity = 0;
pc->sz = 0;
}
void AddContact(pContact pc)
{
assert(pc);
if (Check(pc) == 0)
{
return;
}
printf("請輸入姓名:\n");
scanf("%s", pc->data[pc->sz].name);
printf("請輸入年齡:\n");
scanf("%d", &pc->data[pc->sz].age);
printf("請輸入性別:\n");
scanf("%s", pc->data[pc->sz].sex);
printf("請輸入電話:\n");
scanf("%s", pc->data[pc->sz].tel);
printf("請輸入地址:\n");
scanf("%s", pc->data[pc->sz].add);
pc->sz++;
printf("新增成功\n");
}
static int Find(pContact pc, char name[])//static可以有效的保護程式碼
{
int i = 0;
assert(pc);
for (i = 0; i < pc->sz; i++)
{
if (strcmp(name, pc->data[i].name) == 0)
{
return i;//找到了返回下標
}
}
return -1;//沒找到
}
int Check(pContact pc)
{
if (pc->sz == pc->capacity)
{
//增容
PeoInfo *tmp = realloc(pc->data, (pc->capacity + 2) * sizeof(PeoInfo));
if (tmp != NULL)
{
pc->data = tmp;
pc->capacity += 2;
printf("增容成功\n");
return 1;
}
else
{
return 0;
}
}
return 1;
}
void DelContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int j = 0;
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通訊錄為空,無法刪除\n");
return;
}
printf("請輸入要刪除的人的姓名:\n");
scanf("%s", name);
//1.查詢位置
pos = Find(pc, name);
if (pos == -1)
return;
//2.刪除
for (j = pos; j < pc->sz - 1; j++)
{
pc->data[j] = pc->data[j + 1];
}
pc->sz--;
printf("刪除成功\n");
}
void SearchContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通訊錄為空,無法查詢\n");
return;
}
printf("請輸入要查詢的人的姓名:\n");
scanf("%s", name);
//查詢位置
pos = Find(pc, name);
if (pos == -1)
{
printf("要查詢的人不存在\n");
return;
}
else
{
printf("%10s\t%4s\t%5s\t%12s\t%20s\n", "name", "age", "sex", "tel", "add");
printf("%10s\t%4d\t%5s\t%12s\t%20s\n", pc->data[pos].name, pc->data[pos].age, pc->data[pos].sex, pc->data[pos].tel, pc->data[pos].add);
}
}
void ModifyContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通訊錄為空,無法修改\n");
return;
}
printf("請輸入要修改的人的姓名:\n");
scanf("%s", name);
//查詢
pos = Find(pc, name);
if (pos == -1)
{
printf("要修改的人不存在\n");
return;
}
else
{
printf("請輸入姓名:\n");
scanf("%s", pc->data[pos].name);
printf("請輸入年齡:\n");
scanf("%d", &pc->data[pos].age);
printf("請輸入性別:\n");
scanf("%s", pc->data[pos].sex);
printf("請輸入電話:\n");
scanf("%s", pc->data[pos].tel);
printf("請輸入地址:\n");
scanf("%s", pc->data[pos].add);
printf("修改成功\n");
}
}
void SortContact(pContact pc)
{
int i = 0;
int j = 0;
char tmp = 0;
int flag = 0;
assert(pc);
for (i = 0; i < pc->sz - 1; i++)
{
for (j = 0; j < pc->sz - 1 - i; j++)
{
if (strcmp(pc->data[j].name, pc->data[j + 1].name) > 0)
{
PeoInfo tmp = pc->data[j];
pc->data[j] = pc->data[j + 1];
pc->data[j + 1] = tmp;
flag = 1;
}
}
if (flag == 0)
return;
}
printf("排序成功!\n");
}
void ShowContact(pContact pc)
{
int i = 0;
assert(pc);
printf("%10s\t%4s\t%5s\t%12s\t%20s\n", "name", "age", "sex", "tel", "add");
for (i = 0; i < pc->sz; i++)
{
printf("%10s\t%4d\t%5s\t%12s\t%20s\n", pc->data[i].name, pc->data[i].age, pc->data[i].sex, pc->data[i].tel, pc->data[i].add);
}
}
void EmptyContact(pContact pc)
{
assert(pc);
pc->sz = 0;//清空
}
void SaveContact(pContact pc)
{
FILE *pf=fopen("contact.dat.txt", "wb");
int i = 0;
if (pf == NULL)
{
perror("open file for save");
exit(EXIT_FAILURE);
}
for (i = 0; i < pc->sz; i++)
{
fwrite(pc->data + i, sizeof(PeoInfo), 1, pf);
}
fclose(pf);
pf = NULL;
}
test.c
#define _CRT_SECURE_NO_WARNINGS 1
#include"Contact.h"
void menu()
{
printf("********************************\n");
printf("*** 1.add 2.del ***\n");
printf("*** 3.search 4.modify ***\n");
printf("*** 5.show 6.sort ***\n");
printf("*** 7.empty 0.exit ***\n");
printf("********************************\n");
}
enum Option
{
EXIT,
ADD,
DEL,
SEARCH,
MODIFY,
SHOW,
SORT,
EMPTY
};
void test()
{
int input = 0;
struct Contact con;
InitContact(&con);
do
{
menu();
printf("請選擇");
scanf("%d", &input);
switch (input)
{
case ADD:
AddContact(&con);
break;
case DEL:
DelContact(&con);
break;
case SEARCH:
SearchContact(&con);
break;
case MODIFY:
ModifyContact(&con);
break;
case SHOW:
ShowContact(&con);
break;
case SORT:
SortContact(&con);
break;
case EMPTY:
EmptyContact(&con);
break;
case EXIT:
SaveContact(&con);
DestroyContact(&con);
printf("退出\n");
break;
default:
printf("選擇錯誤\n");
}
} while (input);
}
int main()
{
test();
return 0;
}
執行結果
這裡千萬要注意建立檔案的位置以及它的命名,上圖建立的文字檔案的名子很容易被誤認為是contact.dat,但是其實不是的,應該是contact.dat.txt,建議在建立之前將副檔名開啟完整
雖然這裡我們開啟是看不懂的,但是計算機可以看懂,因為儲存的時候是以二進位制進行儲存的
上一篇:動態通訊錄https://blog.csdn.net/qq_40550018/article/details/82320723