C语言通讯录，动态增长版，联系人增删查找，排序，显示，信息存入文件

//这是一个简易的通讯录，运行时读取在该目录下的名字为FILENAME的文件，
//将信息载入到程序。
//退出程序前将更改后的信息重新写入文件。
//通讯录初始大小为 INIT_NUM，添加时容量不够可自行扩容，
//每次增加INC_NUM个联系人大小。

//主要操作有：
//添加联系人信息，删除指定联系人信息，
//查找指定联系人信息，修改指定联系人信息
//显示所有联系人信息，清空所有联系人，
//以名字排序所有联系人，保存并退出

#define _CRT_SECURE_NO_WARNINGS 1

#ifndef __CONTACT_H__
#define __CONTACT_H__

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

#define MAX_NAME 20
#define MAX_SRX 5
#define MAX_TELE 13
#define MAX_ADDR 30
#define INIT_NUM 3//初始大小
#define INC_NUM 10//每次扩容大小
#define FILENAME "contact.dat"

enum Ch
{
EXIT,
ADD,
DEL,
SEARCH,
MODIFY,
SHOW,
CLEAR,
SORT
};

typedef struct Telnote
{
char name[MAX_NAME];
int age;
char sex[MAX_SRX];
char tele[MAX_TELE];
char addr[MAX_ADDR];
}Telnote;

typedef struct Contact
{
struct Telnote* contact;
int size;//实际个数
int capacity;//容量
}Contact, *Pcon;

void print_menu();
void init_contact(Pcon pcon);
void add_contact(Pcon pcon);
void del_contact(Pcon pcon);
void search_contact(Pcon pcon);
void modify_contact(Pcon pcon);
void clear_contat(Pcon pcon);
void sort_contact(Pcon pcon);
void show_contact(Pcon con);
void save_data(Pcon pcon);

#endif __CONTACT_H__

#include "contact.h"

void print_menu()
{
printf("**************************************\n");
printf("***********1.添加联系人信息***********\n");
printf("***********2.删除指定联系人信息*******\n");
printf("***********3.查找指定联系人信息*******\n");
printf("***********4.修改指定联系人信息*******\n");
printf("***********5.显示所有联系人信息*******\n");
printf("***********6.清空所有联系人***********\n");
printf("***********7.以名字排序所有联系人*****\n");
printf("***********0.*****保存并退出**********\n");
printf("**************************************\n");
}

void check_capacity(Pcon pcon)//检查是否需要扩容
{
if (pcon->size == pcon->capacity)
{
int sz = pcon->capacity + INC_NUM;

Telnote * tmp = (Telnote *)realloc(pcon->contact, sz*sizeof(Telnote));
//避免扩容失败，不能直接让pcon->contact接受地址

pcon->capacity += INC_NUM;

if ( tmp == NULL )
{
printf("扩容失败");
return;
}
pcon->contact = tmp;

}
}

void _add(Pcon pcon, Telnote *p)//从文件添加一个联系人信息到内存
{
assert(pcon);
check_capacity(pcon);
pcon->contact[pcon->size] = *p;
pcon->size++;
}

void load_data(Pcon pcon)//从文件中读取数据
{
Telnote telnote;
FILE *pFread = fopen(FILENAME, "r");
if (pFread == NULL)
{
perror("open file contact.dat for read error");
exit(EXIT_FAILURE);
}
while (fread(&telnote, sizeof(Telnote), 1, pFread))
{
_add(pcon, &telnote);
}
}
void save_data(Pcon pcon)//保存数据到文件中
{
int i = 0;
FILE *pFWrite = fopen(FILENAME, "w");

if (pFWrite == NULL)
{
perror("open file contact.dat for write error");
exit(EXIT_FAILURE);
}
for (i = 0; i< pcon->size ; i++)
{
fwrite(&(pcon->contact[i]), sizeof(Telnote), 1, pFWrite);
}

free(pcon->contact);
fclose(pFWrite);
}

void init_contact(Pcon pcon)//初始化通讯录
{
pcon->size = 0;
pcon->contact = (Telnote *)malloc(sizeof(Telnote)*INIT_NUM);
memset(pcon->contact, 0, INIT_NUM * sizeof(Telnote));
pcon->capacity = INIT_NUM;
load_data(pcon);
}

void add_contact(Pcon pcon)//手动加入一个联系人
{
assert(pcon);
check_capacity(pcon);

printf("请输入名字:>");
scanf("%s", pcon->contact[pcon->size].name);
printf("请输入性别:>");
scanf("%s", pcon->contact[pcon->size].sex);
printf("请输入年龄:>");
scanf("%d", &(pcon->contact[pcon->size].age));
printf("请输入电话:>");
scanf("%s", pcon->contact[pcon->size].tele);
printf("请输入地址:>");
scanf("%s", pcon->contact[pcon->size].addr);
pcon->size++;
printf("插入成功\n");
}

static int find_entry(Pcon pcon, const char *name)//根据姓名查找联系人
{
int i = 0;
for (i = 0; i<pcon->size; i++)
{
if (strcmp(pcon->contact[i].name, name) == 0)
{
return i;
}
}
return -1;
}
void del_contact(Pcon pcon)//删除指定姓名的联系人
{
char find_name[MAX_NAME];
int index = 0;
int start = 0;
if (pcon->size == 0)
{
printf("电话本已空，不能删除\n");
return;
}
printf("请输入删除人的名字:>");
scanf("%s", find_name);
index = find_entry(pcon, find_name);
if (index == -1)
{
printf("要删除的人不存在\n");
return;
}
for (start = index; start <pcon->size - 1; start++)
{
pcon->contact[start] = pcon->contact[start + 1];
}
pcon->size--;
printf("删除成功\n");
}
void show_contact(Pcon pcon)//显示全部联系人信息
{
int i = 0;
printf("%10s\t%5s\t%5s\t%15s\t%10s\n",
"name", "age", "sex", "tele", "addr");
for (i = 0; i<pcon->size; i++)
{
printf("%10s\t%5d\t%5s\t%15s\t%10s\n",
pcon->contact[i].name,
pcon->contact[i].age,
pcon->contact[i].sex,
pcon->contact[i].tele,
pcon->contact[i].addr);
}
}

void search_contact(Pcon pcon)//查找指定姓名的联系人
{
int index = 0;
char find_name[MAX_NAME];
printf("请输入查找人的姓名:>");
scanf("%s", find_name);
index = find_entry(pcon, find_name);
if (index == -1)
{
printf("查找的人不存在\n");
return;
}
printf("%10s\t%5s\t%5s\t%15s\t%10s\n",
"name", "age", "sex", "tele", "addr");
printf("%10s\t%5d\t%5s\t%15s\t%10s\n",
pcon->contact[index].name,
pcon->contact[index].age,
pcon->contact[index].sex,
pcon->contact[index].tele,
pcon->contact[index].addr);
}

void Swap(Telnote* telnote1, Telnote* telnote2)//一个交换函数
{
Telnote tmp;
tmp = *telnote1;
*telnote1 = *telnote2;
*telnote2 = tmp;
}

void modify_contact(Pcon pcon)//更改指定联系人的信息
{
int index = 0;
char find_name[MAX_NAME];
printf("请输入要改的人的姓名:>");
scanf("%s", find_name);
index = find_entry(pcon, find_name);
if (index == -1)
{
printf("指定修改的人不存在\n");
return;
}
printf("请输入名字:>");
scanf("%s", pcon->contact[index].name);
printf("请输入性别:>");
scanf("%s", pcon->contact[index].sex);
printf("请输入年龄:>");
scanf("%d", &(pcon->contact[index].age));
printf("请输入电话:>");
scanf("%s", pcon->contact[index].tele);
printf("请输入地址:>");
scanf("%s", pcon->contact[index].addr);
printf("修改成功\n");
}
void clear_contat(Pcon pcon)//清空通讯录
{
pcon->size = 0;
}
void sort_contact(Pcon pcon)//按姓名顺序排列通讯录
{
int i = 0;
int j = 0;
for (i = 0; i<pcon->size - 1; i++)
{
for (j = 0; j<pcon->size - 1 - i; j++)
{
if (strcmp(pcon->contact[j].name, pcon->contact[j + 1].name) > 0)
{
Swap(&(pcon->contact[j]), &(pcon->contact[j + 1]));
}
}
}
printf("排序成功\n");
}

#include "contact.h"

void Test()
{
int input = 10;
Contact  my_con;
init_contact(&my_con);
print_menu();
while (input)
{
printf("请选择(请输入数字):>");
scanf("%d", &input);

switch (input)
{
case ADD:
add_contact(&my_con);
break;
case DEL:
del_contact(&my_con);
break;
case SEARCH:
search_contact(&my_con);
break;
case MODIFY:
modify_contact(&my_con);
break;
case SHOW:
show_contact(&my_con);
break;
case CLEAR:
clear_contat(&my_con);
break;
case SORT:
sort_contact(&my_con);
break;
case EXIT:
save_data(&my_con);
break;
default:
printf("输入有误请重新输入");
break;
}
}
}
int main()
{
Test();

system("pause");
return 0;
}