有趣的通讯录—最终版

我们完成我们的第二个版本的通讯录，文件版的，

在这里和第一次一样，我任然使用三个文件contact_text_3.h封装结构体以及函数声明，contact_text_3.c封装函数算法，最后，test.c封装主函数和测试函数。

这里我们需要熟悉文件操作，对于fopen函数的使用，文件指针的使用，还有fread函数和fwrite函数。这些最后可以使得我们将通讯录中的内容保存下来，然后方便了下一次的读取，如果后续你学习了关于数据库的操作，那么你还可以通过数据库进行保存通讯录的内容。

contact_text_3.h

#define _CRT_SECURE_NO_WARNINGS 1

#ifndef __CONTACT_TEXT_3_H__
#define __CONTACT_TEXT_3_H__

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<assert.h>

#define NAME_MAX 20
#define  SEX_MAX 5
#define TELE_MAX 20
#define ADD_MAX 50
#define FILENAME "contact.dat"

#define INIT_NUM 3//初始大小
#define INC_NUM 2//每次扩容大小
struct contact
{
char name[NAME_MAX];
char sex[SEX_MAX];
int age;
char tele[TELE_MAX];
char address[ADD_MAX];
};

struct A
{
struct contact *arr;
int i;
int capacity;
};

enum op
{
EXIT,
ADD,
DEL,
SEARCH,
MODIFY,
DISPLAY,
CLEAR,
SORT
};

void Add(struct A *con);

void print_contact(struct A *con);

int find_position(struct A *pcon);

int delete_contact(struct A *pcon);

int find_contacts(struct A *pcon);

int revise_contact(struct A *pcon);

void put_empty(struct A *pcon);

void sort_name(struct A *pcon);

void _init_contact(struct A *pcon);

void print_menu();

void load(struct A *pcon);

void save(struct A *pcon);

#endif //!__CONTACT_TEXT_3_H__

contact_text_3.c

#define _CRT_SECURE_NO_WARNINGS 1

#define _CRT_SECURE_NO_WARNINGS 1
#define _CRT_SECURE_NO_WARNINGS 1

#include"contact-text-3.h"

//检查容量
void check(struct A *con)
{
if (con->i == con->capacity)
{
int sz = con->capacity + INC_NUM;
con->capacity += INC_NUM;
if (sz == 0)
{
printf("错误");
return;
}
con->arr = (struct contact *)realloc(con->arr, sz*sizeof(struct contact));
}

}
//添加联系人信息
void Add(struct A *con)
{
check(con);
printf("请输入名字：");
scanf("%s", con->arr[con->i].name);
printf("请输入性别：");
scanf("%s", con->arr[con->i].sex);
printf("请输入年龄：");
scanf("%d", &(con->arr[con->i].age));
printf("请输入电话号码：");
scanf("%s", con->arr[con->i].tele);
printf("请输入地址：");
scanf("%s", con->arr[con->i].address);
con->i++;
printf("添加完毕。\n");

}
//打印所有联系人信息
void print_contact(struct A *con)
{
printf("打印联系人信息\n");

int i = 0;
printf("%-10s%-5s%-5s%-15s%-20s\n", "name",
"sex", "age", "tele",
"ddress");
for (i = 0; i < con->i; i++)
{
printf("%-10s%-5s%-5d%-15s%-20s\n", con->arr[i].name,
con->arr[i].sex, con->arr[i].age, con->arr[i].tele,
con->arr[i].address);
}
printf("\n");
}

//查找指定联系人所在位置
int find_position(struct A *pcon)
{
int i = 0;
char name[20];
printf("请输入你所要查找的名字：");
scanf("%s", name);
for (i = 0; i < pcon->i; i++)
{
if (strcmp(pcon->arr[i].name, name) == 0)
{
return i;
}
}
return -1;
}

//删除联系人信息
int delete_contact(struct A *pcon)
{
int i = 0;
printf("删除联系人\n");
int ret = find_position(pcon);

if (ret != -1)
{
for (i = ret; i < pcon->i - 1; i++)
{
pcon->arr[i] = pcon->arr[i + 1];
}
pcon->i--;
return 1;
}
else
printf("没有找到这个人，无法删除！\n");
return 0;

}

//查找并且输出这个找到的信息。
int find_contacts(struct A *pcon)
{
printf("查找联系人\n");
int ret = find_position(pcon);
if (ret != -1)
{
printf("姓名：%s\n", pcon->arr[ret].name);
printf("性别：%s\n", pcon->arr[ret].sex);
printf("年龄：%d\n", pcon->arr[ret].age);
printf("电话号码：%s\n", pcon->arr[ret].tele);
printf("地址：%s\n", pcon->arr[ret].address);
return 1;
}
printf("没有找到\n");
return 0;
}

//修改指定联系人的信息
int revise_contact(struct A *pcon)
{
printf("**************\n");
printf("**修改联系人**\n");
printf("**************\n");

int ret = find_position(pcon);
if (ret != -1)
{
printf("请输入你所想要修改的数据：\n");
printf("请输入修改后的名字：");
scanf("%s", pcon->arr[ret].name);
printf("请输入修改后的性别：");
scanf("%s", pcon->arr[ret].sex);
printf("请输入修改后的年龄：");
scanf("%d", &(pcon->arr[ret].age));
printf("请输入修改后的电话号码：");
scanf("%s", pcon->arr[ret].tele);
printf("请输入修改后的地址：");
scanf("%s", pcon->arr[ret].address);
return 1;
}
printf("没有找到你所需要修改的联系人。\n");
return 0;
}

//清空所有联系人
void put_empty(struct A *pcon)
{
printf("清空联系人\n");
memset(pcon->arr, 0, (pcon->capacity)* sizeof(struct contact));
pcon->i = 0;
}

//以名字排序所有联系人

void sort_name(struct A *pcon)
{
printf("排序\n");
char ch = 0;
int i = 0;
int j = 0;
printf("请选择排序方式（‘<’代表由z->a,'>'代表由a->z）:");
fflush(stdin);
scanf("%c", &ch);
int flag = 0;
if (ch == '>')
{

for (i = 0; i < pcon->i; i++)
{
flag = 0;
for (j = 0; j < pcon->i - i - 1; j++)
{
if (strcmp(pcon->arr[j].name, pcon->arr[j + 1].name)>0)
{
struct contact tmp = { 0 };
tmp = pcon->arr[j];
pcon->arr[j] = pcon->arr[j + 1];
pcon->arr[j + 1] = tmp;
flag = 1;
}

}
if (flag == 0)
break;
}
}
else if (ch == '<')
{
for (i = 0; i < pcon->i; i++)
{
flag = 0;
for (j = 0; j < pcon->i - i - 1; j++)
{
if (strcmp(pcon->arr[j].name, pcon->arr[j + 1].name)<0)
{
struct contact tmp = { 0 };
tmp = pcon->arr[j];
pcon->arr[j] = pcon->arr[j + 1];
pcon->arr[j + 1] = tmp;
flag = 1;
}

}
if (flag == 0)
break;
}
}
else
printf("选择错误，请返回重新选择：\n");
printf("排序结束！\n");

}

void _init_contact(struct A *pcon)
{
pcon->i = 0;
pcon->arr = (struct contact*)malloc(sizeof(struct contact)*INIT_NUM);
memset(pcon->arr, 0, INIT_NUM*sizeof(struct contact));
pcon->capacity = INIT_NUM;
load(pcon);
}

void print_menu()
{
printf("$$$$$$$$CONTACT-TEXT$$$$$$$$\n");
printf("$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n");
printf("$$$  1.add      2.del    $$$\n");
printf("$$$  3.search   4.modify $$$\n");
printf("$$$  5.show     6.clr    $$$\n");
printf("$$$  7.sort     0.exit   $$$\n");
printf("$$$$$$$$$$$$$$$$$$$$$$$$$$$$\n");
}

void load(struct A *pcon)
{
int n = 0;
struct contact tmp = {0};

FILE *pRead = fopen(FILENAME, "r");

if (pRead == NULL)
{
perror("open failed for read error");
exit(EXIT_FAILURE);
}
while (fread(&tmp, sizeof(struct contact), 1, pRead))
{
check(pcon);
pcon->arr
= tmp;
n++;
pcon->i++;

}

}

void save(struct A *pcon)
{
FILE *pWrite = fopen(FILENAME, "w");
if (pWrite == NULL)
{
perror("open failed for write error");
exit(EXIT_FAILURE);
}
for (int i = 0; i < pcon->i; i++)
{
fwrite(&(pcon->arr[i]), sizeof(struct contact), 1,pWrite);
}
free(pcon->arr);
fclose(pWrite);
}

test.c

#define _CRT_SECURE_NO_WARNINGS 1

#define _CRT_SECURE_NO_WARNINGS 1

#define _CRT_SECURE_NO_WARNINGS 1

#include"contact-text-3.h"
void Test()
{
struct A con;
int input = 1;
_init_contact(&con);
while (input)
{

print_menu();
printf("请选择：");
scanf("%d", &input);
switch (input)
{

case ADD:
Add(&con);
break;
case DEL:
delete_contact(&con);
break;
case SEARCH:
find_contacts(&con);
break;
case MODIFY:
revise_contact(&con);
break;
case DISPLAY:
print_contact(&con);
break;
case CLEAR:
put_empty(&con);
break;
case SORT:
sort_name(&con);
break;
case EXIT:
save(&con);

break;
default:
break;
}
}

}
int main()
{
Test();
system("pause");
return 0;
}