动态通讯录
上篇博客介绍了动态通讯录,本篇继续进一步将动态通讯录存储在文件里
加载信息
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))
{//加载
if (Check(pc) == 0)
{
exit(EXIT_FAILURE);
}
pc->data[pc->sz] = tmp;
pc->sz++;
}
fclose(pf);
pf = NULL;
}
增加联系人
void AddContact(pContact pc)
{
assert(pc);
if (Check(pc) == 0)
{
return;
}
printf("请输入姓名:\n");
scanf("%s", pc->data[pc->sz].name);
printf("请输入年龄:\n");
scanf("%d", &pc->data[pc->sz].age);
printf("请输入性别:\n");
scanf("%s", pc->data[pc->sz].sex);
printf("请输入电话:\n");
scanf("%s", pc->data[pc->sz].tel);
printf("请输入地址:\n");
scanf("%s", pc->data[pc->sz].add);
pc->sz++;
printf("添加成功\n");
}
删除联系人
static int Find(pContact pc,char name[])//static可以有效的保护代码
{
int i = 0;
assert(pc);
for (i = 0; i < pc->sz; i++)
{
if (strcmp(name, pc->data[i].name) == 0)
{
return i;//找到了返回下标
}
}
return -1;//没找到
}
void DelContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int j = 0;
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通讯录为空,无法删除\n");
return;
}
printf("请输入要删除的人的姓名:\n");
scanf("%s", name);
//1.查找位置
pos=Find(pc, name);
if (pos == -1)
return;
//2.删除
for (j = pos; j < pc->sz - 1; j++)
{
pc->data[j] = pc->data[j + 1];
}
pc->sz--;
printf("删除成功\n");
}
查找联系人
void SearchContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通讯录为空,无法查找\n");
return;
}
printf("请输入要查找的人的姓名:\n");
scanf("%s", name);
//查找位置
pos = Find(pc, name);
if (pos == -1)
{
printf("要查找的人不存在\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);
}
}
修改联系人
void ModifyContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通讯录为空,无法修改\n");
return;
}
printf("请输入要修改的人的姓名:\n");
scanf("%s", name);
//查找
pos = Find(pc, name);
if (pos == -1)
{
printf("要修改的人不存在\n");
return;
}
else
{
printf("请输入姓名:\n");
scanf("%s", pc->data[pos].name);
printf("请输入年龄:\n");
scanf("%d", &pc->data[pos].age);
printf("请输入性别:\n");
scanf("%s", pc->data[pos].sex);
printf("请输入电话:\n");
scanf("%s", pc->data[pos].tel);
printf("请输入地址:\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
}
显示
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);
}
}
存储信息
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;//数据存放的位置
int sz;//表示当前有sz个有效数据
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);//读文件
}
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("请输入姓名:\n");
scanf("%s", pc->data[pc->sz].name);
printf("请输入年龄:\n");
scanf("%d", &pc->data[pc->sz].age);
printf("请输入性别:\n");
scanf("%s", pc->data[pc->sz].sex);
printf("请输入电话:\n");
scanf("%s", pc->data[pc->sz].tel);
printf("请输入地址:\n");
scanf("%s", pc->data[pc->sz].add);
pc->sz++;
printf("添加成功\n");
}
static int Find(pContact pc, char name[])//static可以有效的保护代码
{
int i = 0;
assert(pc);
for (i = 0; i < pc->sz; i++)
{
if (strcmp(name, pc->data[i].name) == 0)
{
return i;//找到了返回下标
}
}
return -1;//没找到
}
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("通讯录为空,无法删除\n");
return;
}
printf("请输入要删除的人的姓名:\n");
scanf("%s", name);
//1.查找位置
pos = Find(pc, name);
if (pos == -1)
return;
//2.删除
for (j = pos; j < pc->sz - 1; j++)
{
pc->data[j] = pc->data[j + 1];
}
pc->sz--;
printf("删除成功\n");
}
void SearchContact(pContact pc)
{
char name[NAME_MAX] = { 0 };
int pos = 0;
assert(pc);
if (pc->sz == 0)
{
printf("通讯录为空,无法查找\n");
return;
}
printf("请输入要查找的人的姓名:\n");
scanf("%s", name);
//查找位置
pos = Find(pc, name);
if (pos == -1)
{
printf("要查找的人不存在\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("通讯录为空,无法修改\n");
return;
}
printf("请输入要修改的人的姓名:\n");
scanf("%s", name);
//查找
pos = Find(pc, name);
if (pos == -1)
{
printf("要修改的人不存在\n");
return;
}
else
{
printf("请输入姓名:\n");
scanf("%s", pc->data[pos].name);
printf("请输入年龄:\n");
scanf("%d", &pc->data[pos].age);
printf("请输入性别:\n");
scanf("%s", pc->data[pos].sex);
printf("请输入电话:\n");
scanf("%s", pc->data[pos].tel);
printf("请输入地址:\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("请选择");
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("选择错误\n");
}
} while (input);
}
int main()
{
test();
return 0;
}
运行结果
这里千万要注意创建文件的位置以及它的命名,上图创建的文本文件的名子很容易被误认为是contact.dat,但是其实不是的,应该是contact.dat.txt,建议在创建之前将扩展名打开完整
虽然这里我们打开是看不懂的,但是计算机可以看懂,因为存储的时候是以二进制进行存储的
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