通讯录小程序

时间：2022-08-11 01:08:48

addr_book.h

#define _CRT_SECURE_NO_WARNINGS 1
#pragma once

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

#define NAME_SIZE 200 
#define PHONE_SIZE 200 
#define ADDR_SIZE 200 

#define FILE_PATH "./data.txt" 

enum
{
	DISPLAY = 1,
	ADD = 2,
	ERASE = 3,
	FIND = 4,
	MODIFY = 5,
	EXIT = 0
};

typedef struct PersonInfo
{
	char name[NAME_SIZE];
	char phone[PHONE_SIZE];
	char addr[ADDR_SIZE];
} PersonInfo;

typedef struct AddrBook
{
	PersonInfo* data;
	size_t size;
	size_t capacity;
} AddrBook;

void AddrBookInit(AddrBook* addr_book);//初始化通讯录
void AddrBookAdd(AddrBook* addr_book);//通讯录中增加条目
void AddrBookErase(AddrBook* addr_book);//删除通讯录中的指定条目
void AddrBookFind(AddrBook* addr_book);//按指定规则查找通讯录中特定条目
void AddrBookDisplay(AddrBook* addr_book);//打印通讯录中的所有信息
void AddrBookModify(AddrBook* addr_book);//修改通讯录的指定条目
void AddrBookDestroy(AddrBook* addr_book);//销毁通讯录
void AddrBookSave(AddrBook* addr_book);//将通讯录内容保存在文件
void AddrBookLoad(AddrBook* addr_book);//将文件中的内容加载回内存

addr_book.c

#include "addr_book.h"

//初始化通讯录
void AddrBookInit(AddrBook* addr_book)
{
	if (addr_book == NULL)
	{
		printf("addr_book is NULL\n");
		return;
	}
	addr_book->size = 0;
	addr_book->capacity = 1;
	addr_book->data = (PersonInfo*)malloc(sizeof(PersonInfo)*addr_book->capacity);
}

void AddrBookRelloc(AddrBook* addr_book)
{
	if (addr_book == NULL)
	{
		printf("addr_book is NULL\n");
		return;
	}
	addr_book->capacity = addr_book->capacity * 2 + 1;
	PersonInfo* new_data = (PersonInfo*)malloc(sizeof(PersonInfo)*addr_book->capacity);
	size_t i = 0;
	for (; i < addr_book->size; ++i)
	{
		new_data[i] = addr_book->data[i];
	}
	free(addr_book->data);
	addr_book->data = new_data; 
}

//通讯录中增加条目
void AddrBookAdd(AddrBook* addr_book)
{
	if (addr_book == NULL)
	{
		printf("addr_book is NULL\n");
		return;
	}
	if (addr_book->size >= addr_book->capacity)
	{
		AddrBookRelloc(addr_book);
	}
	size_t cur = addr_book->size;
	++addr_book->size;
	printf("开始输入数据：\n");
	printf("请输入姓名：\n");
	scanf("%s", addr_book->data[cur].name);
	printf("请输入电话：\n");
	scanf("%s", addr_book->data[cur].phone);
	printf("请输入地址：\n");
	scanf("%s", addr_book->data[cur].addr);
	printf("插入成功\n");
	return;
}

int AddrBookFindNum(AddrBook* addr_book, char* find_name)
{
	int i = 0;
	for (; i < addr_book->size; ++i)
	{
		if (strcmp(addr_book->data[i].name, find_name) == 0)
			return i;
	}
	return -1;
}

//删除通讯录中的指定条目
void AddrBookErase(AddrBook* addr_book)
{
	if (addr_book == NULL)
	{
		printf("addr_book is NULL\n");
		return;
	}
	char name[NAME_SIZE];
	int n = 0;
	printf("请输入要删除人的姓名：\n");
	scanf("%s", name);
	int i = AddrBookFindNum(addr_book, name);
	if (i != -1)
	{
		printf("您是否要删除该联系人：\n");
		printf("1.删除  0.不删除\n");
		scanf("%d", &n);
		if (n == 1)
		{
			for (; i < addr_book->size - 1; ++i)
			{
				addr_book->data[i] = addr_book->data[i + 1];
			}
			addr_book->size--;
			printf("删除成功\n");
		}
		else
		{
			printf("删除失败\n");
		}
	}
	else
	{
		printf("您要删除的联系人不存在\n");
	}
}

//按指定规则查找通讯录中特定条目
void AddrBookFind(AddrBook* addr_book)
{
	char name[NAME_SIZE];
	printf("请输入要查找联系人的姓名：\n");
	scanf("%s", name);
	int i = AddrBookFindNum(addr_book, name);
	if (i != -1)
	{
		printf("姓名：%s\n", addr_book->data[i].name);
		printf("电话：%s\n", addr_book->data[i].phone);
		printf("地址：%s\n", addr_book->data[i].addr);
	}
	else
	{
		printf("您要查找的联系人不存在\n");
	}
}

//打印通讯录中的所有信息
void AddrBookDisplay(AddrBook* addr_book)
{
	if (addr_book == NULL)
	{
		printf("addr_book is NULL\n");
		return;
	}
	printf("编号\t\t姓名\t\t电话\t\t地址\n");
	size_t i = 0;
	for (; i < addr_book->size; ++i)
	{
		printf("%d\t\t%s\t\t%s\t\t%s\n",
			i, addr_book->data[i].name, addr_book->data[i].phone, addr_book->data[i].addr);
	}
	return;
}

//修改通讯录的指定条目
void AddrBookModify(AddrBook* addr_book)
{
	if (addr_book == NULL)
	{
		printf("addr_book is NULL\n");
		return;
	}
	char name[NAME_SIZE];
	printf("请输入您要修改联系人的姓名：\n");
	scanf("%s", name);
	int i = AddrBookFindNum(addr_book, name);
	if (i != -1)
	{
		printf("1.姓名：%s\n", addr_book->data[i].name);
		printf("2.电话：%s\n", addr_book->data[i].phone);
		printf("3.地址：%s\n", addr_book->data[i].addr);
		int n = 0;
		while (1)
		{
			printf("请输入您要修改的选项：\n");
			scanf("%d", &n);
			switch (n)
			{
			case 1:
				printf("请把姓名修改成：\n");
				scanf("%s", addr_book->data[i].name);
				break;
			case 2:
				printf("请把电话修改成：\n");
				scanf("%s", addr_book->data[i].phone);
				break;			
			case 3:
				printf("请把地址修改成：\n");
				scanf("%s", addr_book->data[i].addr);
				break;
			default:
				printf("非法输入！请重新选择\n");
				break;
			}
		}
	}
	else
	{
		printf("您要修改的联系人不存在\n");
	}
}

//销毁通讯录
void AddrBookDestroy(AddrBook* addr_book)
{
	addr_book->size = 0;
	addr_book->capacity = 0;
	free(addr_book->data);
}

//将通讯录内容保存在文件
void AddrBookSave(AddrBook* addr_book)
{
	if (addr_book == NULL)
	{
		printf("addr_book is NULL\n");
		return;
	}
	FILE* fp = fopen(FILE_PATH, "w");
	if (fp == NULL)
	{
		printf("打开文件失败! %s\n", FILE_PATH);
		return;
	}
	size_t i = 0;
	for (; i < addr_book->size; ++i)
	{
		fprintf(fp, "%d\t\t%s\t\t%s\t\t%s\n",
			i, addr_book->data[i].name, addr_book->data[i].phone, addr_book->data[i].addr);
	}
	fclose(fp);
}

//将文件中的内容加载回内存
void AddrBookLoad(AddrBook* addr_book)
{
	if (addr_book == NULL)
	{
		printf("addr_book is NULL\n");
		return;
	}
	FILE* fp = fopen(FILE_PATH, "r");
	if (fp == NULL)
	{
		printf("打开文件失败! %s\n", FILE_PATH);
		return;
	}
	while (!feof(fp))//文件结束符
	{
		size_t i = addr_book->size;
		if (addr_book->size >= addr_book->capacity)
		{
			AddrBookRelloc(addr_book);
		}
		fscanf(fp, "%d\t\t%s\t\t%s\t\t%s\n",
			i, addr_book->data[i].name, addr_book->data[i].phone, addr_book->data[i].addr);
		++addr_book->size;
	}
	fclose(fp);
}
///////////////////////////////////
//////////以下为测试代码//////////
//////////////////////////////////
void Menu()
{
	AddrBook addr_book;
	AddrBookInit(&addr_book);
	AddrBookLoad(&addr_book);
	while (1)
	{
		printf("==========================\n");
		printf("      1.显示所有条目      \n");
		printf("        2.新增条目        \n");
		printf("        3.删除条目        \n");
		printf("        4.查找条目        \n");
		printf("        5.修改条目        \n");
		printf("==========================\n");
		int choice = 0;
		printf("请输入您的选项：\n");
		scanf("%d", &choice);
		switch (choice)
		{
		case DISPLAY:
			AddrBookDisplay(&addr_book);
			break;
		case ADD:
			AddrBookAdd(&addr_book);
			AddrBookSave(&addr_book);
			break;
		case ERASE:
			AddrBookErase(&addr_book);
			AddrBookSave(&addr_book);
			break;
		case FIND:
			AddrBookFind(&addr_book);
			break;
		case MODIFY:
			AddrBookModify(&addr_book);
			AddrBookSave(&addr_book);
			break;
		case EXIT:
			AddrBookDestroy(&addr_book);
			exit(1);
			break;
		default:
			printf("非法输入！请重新选择\n");
			break;
		}
	}
}

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

结果演示：

通讯录小程序

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