c 語言 通訊錄 寫入文本文件（含讀取，刪除某行，修改某行）
/* 實現一個通訊錄；
通訊錄可以用來存儲1000個人的信息，每個人的信息包括：
姓名、性別、年齡、電話、住址
提供方法：
1. 添加聯系人信息
2. 刪除指定聯系人信息
3. 查找指定聯系人信息
4. 修改指定聯系人信息
5. 顯示所有聯系人信息
6. 清空所有聯系人
7. 顯示文本電話簿信息 */
//頭文件
#ifndef __PHONE_BOOK_H__
#define __PHONE_BOOK_H__
typedef struct phone_book
{
char name[10];
char sex[5];
char addr[20];
int year;
char phone_num[12];
struct phone_book *pNext;
}Book,*pBook;
pBook add_linkman(pBook head);
pBook remove_linkman(pBook head);
void traver_linkman(pBook head);
pBook empty_linkman(pBook head);
pBook amend_linkman(pBook head);
void search_linkman(pBook head);
void start(pBook *head);
void write_file(pBook position);//寫入文本
void read_file(pBook head);//讀取文本信息
void amend_file(pBook position, char *name, int flag);//修改，刪除文本中的某一行信息
#endif
//函數文件
#include<stdio.h>
#include"phone_book.h"
#include<string.h>
#include<assert.h>
extern char file_name[30]="\0";
void start(pBook *phead)
{
int i = -1;
assert(phead);
while (1)
{
printf("歡迎使用電話薄系統！選擇您的操作：\n\n");
printf("*********************************************\n"
"*1.添加聯系人信息 2.刪除指定聯系人信息 *\n"
"*3.查找指定聯系人信息 4.修改指定聯系人信息 *\n"
"*5.顯示所有聯系人信息 6.清空所有聯系人 *\n"
"*7.顯示電話文本內信息 0.結束系統！ *\n"
"* ————中情局專用———— *\n"
"*********************************************\n");
scanf("%d",&i);
switch (i)
{
case 0:
printf("*****感謝使用本系統!*****\n");
printf(" 您的電話本存儲路徑為：%s 別忘記哦！\n", file_name);
exit(0);
case 1:
*phead=add_linkman( phead);
break;
case 2:
*phead = remove_linkman(phead);
break;
case 3:
search_linkman(phead);
break;
case 4:
*phead = amend_linkman(phead);
break;
case 5:
traver_linkman(phead);
break;
case 6:
empty_linkman( phead);
break;
case 7:
read_file(phead);
break;
default:
printf("選擇有誤！請重新選擇\n");
break;
}
}
}
pBook add_linkman(pBook head)
{
int i = 0;
char name[10];
char sex[5];
char addr[20];
int year;
long phone_num;
pBook pBase = head;
assert(head);
flag:
printf("你要添加多少個聯系人：");
scanf("%d",&i);
if (i <= 0)
{
printf("輸入數量錯誤！\n");
goto flag;
}
if (head->pNext == NULL)
{
while (i--)
{
pBook pNew = (pBook)malloc(sizeof(Book));
assert(pNew);
printf("請輸入聯系人信息：（姓名、性別、地址、年齡、電話號碼）\n");
scanf("%s", name);
scanf("%s", sex);
scanf("%s", addr);
strcpy(pNew->name, name);
strcpy(pNew->sex, sex);
strcpy(pNew->addr, addr);
scanf("%d", &pNew->year);
scanf("%s", &pNew->phone_num);
pBase->pNext = pNew;
pNew->pNext = NULL;
pBase = pNew;
write_file(pNew);
}
}
else
{
while (pBase->pNext != NULL)
{
pBase = pBase->pNext;
}
while (i--)
{
pBook pNew = (pBook)malloc(sizeof(Book));
assert(pNew);
printf("請輸入聯系人信息：（姓名、性別、地址、年齡、電話號碼）\n");
scanf("%s", name);
scanf("%s", sex);
scanf("%s", addr);
strcpy(pNew->name, name);
strcpy(pNew->sex, sex);
strcpy(pNew->addr, addr);
scanf("%d", &pNew->year);
scanf("%s", &pNew->phone_num);
pBase->pNext = pNew;
pNew->pNext = NULL;
pBase = pNew;
write_file(pNew);
}
}
return head;
}
pBook remove_linkman(pBook head)
{
pBook link_man = head;
char name[10];
if (!head)
{
printf("沒有聯系人，不能刪除！\n");
return NULL;
}
printf("請問你要刪除哪位聯系人？ ");
scanf("%s",name);
while (link_man->pNext!=NULL)
{
if (strcmp(link_man->pNext->name, name) == 0)
{
amend_file(link_man->pNext,name,0);
if (link_man->pNext->pNext == NULL)
{
free(link_man->pNext);
link_man->pNext = NULL;
printf("刪除完成！\n");
}
else
{
pBook ptmp = NULL;
ptmp = link_man->pNext;
link_man->pNext = link_man->pNext->pNext;
free(ptmp);
printf("刪除完成！\n");
}
return head;
}
else
{
link_man = link_man->pNext;
}
}
printf("沒有找到該聯系人！\n");
return head;
}
void traver_linkman(pBook head)
{
pBook link_man = head;
if (head->pNext == NULL)
{
printf("電話簿為空！\n");
}
while (link_man->pNext!=NULL)
{
printf("%s\n", link_man->pNext->name);
printf("%s\n", link_man->pNext->sex);
printf("%s\n", link_man->pNext->addr);
printf("%d\n", link_man->pNext->year);
printf("%s\n", link_man->pNext->phone_num);
printf("***********************************\n");
link_man = link_man->pNext;
}
}
pBook empty_linkman(pBook head)
{
pBook ptmp = NULL;
pBook link_man = head;
if (head->pNext == NULL)
{
printf("電話簿為空！不用清空哦！(ˇ0ˇ) \n");
return NULL;
}
while (link_man->pNext != NULL)
{
if (link_man->pNext->pNext == NULL)
{
free(link_man->pNext);
link_man->pNext = NULL;
}
else
{
ptmp = link_man->pNext;
link_man->pNext = link_man->pNext->pNext;
free(ptmp);
}
}
printf("清空完成！\n");
write_file(NULL);
return NULL;
}
pBook amend_linkman(pBook head)
{
char name[10];
char sex[5];
char addr[20];
pBook link_man = head;
if (!head)
{
printf("沒有聯系人，不能修改！\n");
return NULL;
}
printf("請問你要修改哪位聯系人？ ");
scanf("%s", name);
while (link_man->pNext != NULL)
{
if (strcmp(link_man->pNext->name, name) == 0)
{
printf("請輸入聯系人信息：（姓名、性別、地址、年齡、電話號碼）\n");
scanf("%s", name);
scanf("%s", sex);
scanf("%s", addr);
strcpy(link_man->pNext->name, name);
strcpy(link_man->pNext->sex, sex);
strcpy(link_man->pNext->addr, addr);
scanf("%d", &link_man->pNext->year);
scanf("%s", &link_man->pNext->phone_num);
amend_file(link_man->pNext,name,1);
return head;
}
else
link_man = link_man->pNext;
}
return head;
}
void search_linkman(pBook head)
{
char name[10];
pBook link_man = head;
if (!head)
{
printf("沒有聯系人，查找失敗！\n");
return NULL;
}
printf("請問你要查找哪位聯系人？ ");
scanf("%s", name);
while (link_man->pNext != NULL)
{
if (strcmp(link_man->pNext->name, name) == 0)
{
printf("%s\n", link_man->pNext->name);
printf("%s\n", link_man->pNext->sex);
printf("%s\n", link_man->pNext->addr);
printf("%d\n", link_man->pNext->year);
printf("%s\n", link_man->pNext->phone_num);
printf("***********************************\n");
return 0;
}
else
link_man = link_man->pNext;
}
printf("沒有找到！\n");
}
void write_file(pBook position)
{
FILE *list;
if (position != NULL)
{
if (strcmp(file_name,"\0")==0)
{
printf("請輸入你要存儲的文件路徑：");
scanf("%s", file_name);
list = fopen(file_name, "wt");
fprintf(list, "%-10s", "姓名");
fprintf(list, "%-6s", "性別");
fprintf(list, "%-10s", "地址");
fprintf(list, "%-8s", "年齡");
fprintf(list, "%-20s", "號碼");
fprintf(list, "%s", "\n");
}
else
list = fopen(file_name, "a+");
fprintf(list,"%-10s",position->name);
fprintf(list, "%-6s", position->sex);
fprintf(list, "%-10s", position->addr);
fprintf(list, "%-8d", position->year);
fprintf(list, "%-20s", position->phone_num);
fprintf(list, "%s", "\n");
}
else
{
list = fopen(file_name, "w");
fprintf(list, "%s", " 已經銷毀的通訊錄 ");
strcpy(file_name,"\0");
}
fclose(list);
}
void read_file(pBook head)
{
if (head->pNext == NULL)
{
printf("空的通訊錄\n\n");
}
else
{
FILE *list = fopen(file_name, "r");
char ch;
while ((ch = fgetc(list)) != EOF)
{
putchar(ch);
}
}
}
void amend_file(pBook position,char *name,int i)
{
char str[100];
long num1=0;
FILE * list = fopen(file_name, "r");
while (fgets(str, 100, list)!=NULL)
{
if (strstr(str, name) == NULL)
{
num1 += strlen(str) + 1;
}
else
break;
}
fclose(list);
list = fopen(file_name, "r+");
fseek(list, num1, SEEK_SET);
if (i == 0)
{
fprintf(list, "%54s"," ");
fprintf(list, "%s", "\n");
}
else
{
fprintf(list, "%-10s", position->name);
fprintf(list, "%-6s", position->sex);
fprintf(list, "%-10s", position->addr);
fprintf(list, "%-8d", position->year);
fprintf(list, "%-20s", position->phone_num);
fprintf(list, "%s", "\n");
}
fclose(list);
}
//主函數
#include<stdio.h>
#include"phone_book.h"
char file_name[30];
int main()
{
pBook phead = NULL;
start(&phead);
return 0;
}
