创建动态通讯录

今天我们用自定义类型和动态内存管理实现一个通讯录程序，能够实现以下要求:

1. 添加联系人信息
2. 删除指定联系人信息
3. 查找指定联系人信息
4. 修改指定联系人信息
5. 显示所有联系人信息
6. 清空所有联系人
7. 以名字排序所有联系人

头文件 Contact.h

#ifndef __TEST_H__
#define __TEST_H__
#pragma once  
//2.实现一个通讯录；
//通讯录可以用来存储1000个人的信息，每个人的信息包括:
//姓名、性别、年龄、电话、住址
//
//提供方法：
//1.	添加联系人信息
//2.	删除指定联系人信息
//3.	查找指定联系人信息
//4.	修改指定联系人信息
//5.	显示所有联系人信息
//6.	清空所有联系人
//7.	以名字排序所有联系人
#include<stdio.h>  
#include<string.h>  
#include<assert.h>  
#include<stdlib.h>  
#include<math.h>
#include <windows.h>
#include<time.h>
#define Filename "Contact.txt"
typedef struct PERSON
{
	char Name[20];
	char Sex[5];
	int Age;
	char Tel[20];
	char Address[50];

}Person;

typedef struct BOOK
{
	int max;      //当前上限
	int count;    //当前已存储人数
	Person* Data;
}Book;
void Initbook(Book* people);
void Add_person(Book * people);
void show_person(Book* people);
void Del_person(Book* people);
void Find_person(Book* people);
void Change_person(Book* people);
void BubbleSort_person(Book* people);
void Req_mem(Book* people);
void Desbook(Book* people);
#endif //__TEST_H__

源文件 Test.c

#include "test.h"
//仅查找
static int find_person(Book* people)
{
	int i = 0;
	assert(people);
	char name[20];
	printf("\t\t     输入姓名：");
	scanf("%s", name);
	for (; i<people->count; i++)
	{
		if (strcmp(people->Data[i].Name, name) == 0)
		{
			return i;
		}
	}
	//printf("没有找到该联系人！\n");
	//system("pause");
	return -1;
}
//加载文件
void load(Book*people)
{
	FILE* op = fopen(Filename, "a+");
	FILE* load = fopen(Filename,"r");
	fclose(op);
	if (load == NULL)
	{
		perror("load file,please try again");
		exit(1);
	}
	while (fread(&(people->Data[people->count]), sizeof(Person), 1, load))
	{
		people->count++;
		Req_mem(people);
	}
	fclose(load);
	load = NULL;
}
//保存文件
void save(Book*people)
{
	int i = 0;
	FILE* save = fopen(Filename,"w");
	if (save == NULL)
	{
		perror("save file");
		exit(1);
	}
	while (i<people->count)
	{
		fwrite(&(people->Data[i]), sizeof(Person), 1, save);
		i++;
	}
	//fwrite(people->Data, sizeof(Person), (size_t)people->count, save);
	fclose(save);
	save = NULL;
}
//初始化  
void Initbook(Book* people)
{
	(people)->Data = (Person*)malloc(2*sizeof(Person));
	(people)->count = 0;
	(people)->max = 2;
	load(people);
}
//清空
void Desbook(Book* people)
{
	free(people->Data);
	people->Data = NULL;
	people->max = 0;
	people->count = 0;
	save(people);
	printf("\t\t     清空完毕！\n");
	Sleep(300);
}
//打印
void show_person(Book* people)
{
	int i = 0;
	if (people == NULL)
	{
		printf("\t\t     空通讯录！\n\t\t     ");
		system("pause");
		return;
	}
	if (people->count == 0)
	{
		printf("\t\t     空通讯录！\n\t\t     ");
		system("pause");
		return;
	}
	printf("\t\t     |%-15s\t|%-5s\t|%-5s\t|%-15s\t|%-20s\n", "姓名", "性别", "年龄", "电话", "地址");
	for (; i<=people->count-1; ++i)
	{
		printf("\t\t     |%-15s\t", people->Data[i].Name);
		printf("|%-5s\t", people->Data[i].Sex);
		printf("|%-5d\t", people->Data[i].Age);
		printf("|%-15s\t", people->Data[i].Tel);
		printf("|%-20s\n", people->Data[i].Address);
	}
	printf("\n\t\t     ");
	system("pause");
}

//申请内存
void Req_mem(Book *people)
{
	Person* p;
	if (people->count < people->max - 1)return;
	p = (Person*)realloc((people)->Data,((people)->max+=5)*sizeof(Person));
	if (p != NULL)
	{
		(people)->Data = p;
		return;
	}
	else
	{
		perror("realloc");
		exit(EXIT_FAILURE);
	}
}
//增加成员  
void Add_person(Book *people)
{
	int i = 0;
	assert(people);
	if ((people)->count == 1000)
	{
		printf("\t\t     通讯录已满！\n");
		return;
	}
	Req_mem(people);
	printf("\t\t     请输入姓名:>");
	scanf("%s", ((people)->Data[(people)->count]).Name);
	printf("\t\t     请输入性别:>");
	scanf("%s", ((people)->Data[(people)->count]).Sex);
	printf("\t\t     请输入年龄:>");
	scanf("%d", &((people)->Data[(people)->count]).Age);
	printf("\t\t     请输入联系方式:>");
	scanf("%s", ((people)->Data[(people)->count]).Tel);
	for (; i<(people)->count; ++i)
	{  
		if (strcmp((people)->Data[i].Tel, (people)->Data[(people)->count].Tel) == 0)
	    {  
	        printf("\t\t     联系人已存在！\n\t\t     ");  
			system("pause");
			return;
	    }
	}
	printf("\t\t     请输入住址:>");
	scanf("%s", ((people)->Data[(people)->count]).Address);
	printf("\t\t     增加成功！\n");
	Sleep(300);
	(people)->count++;
	//printf("count = %d\n", (*people)->count);

}
//删除成员  
void Del_person(Book* people)
{
	if (people->count == 0)
	{
		printf("\t\t     空通讯录！\n\t\t     ");
		system("pause");
		return;
	}
	int ret = find_person(people);
	if (ret != -1)
	{
		int i = ret;
		for (; i<people->count-1; ++i)
		{
			people->Data[i] = people->Data[i + 1];
		}
		people->count--;
	}
	else
	{
		printf("\t\t     没有该成员！\n");
		system("pause");
	}
}

//查找成员  
void Find_person(Book* people)
{
	int i = 0;
	char name[20];
	if (people->count == 0)
	{
		printf("\t\t     空通讯录！\n\t\t     ");
		system("pause");
		return;
	}
	assert(people);
	printf("\t\t     输入姓名：");
	scanf("%s", name);

	for (; i<people->count; ++i)
	{
		if (strcmp(people->Data[i].Name, name) == 0)
		{
			printf("\t\t     Name:%s\n\t\t     Sex:%s\n\t\t     Age:%d\n\t\t     Tel:%s\n\t\t     Add:%s\n\t\t     ",
				people->Data[i].Name,
				people->Data[i].Sex,
				people->Data[i].Age,
				people->Data[i].Tel,
				people->Data[i].Address);
			//printf("编号为 %d\n", i);
			system("pause");
			return;
		}
	}
	printf("\t\t     没有找到该联系人！\n\t\t     ");
	system("pause");
	return ;
}

//修改成员  
void Change_person(Book* people)
{
	assert(people);
	int ret = find_person(people);
	if (ret != -1)
	{
		printf("\t\t     Name->:");
		scanf("%s", people->Data[ret].Name);
		printf("\t\t     Sex->:");
		scanf("%s", people->Data[ret].Sex);
		printf("\t\t     Age->:");
		scanf("%d", &(people->Data[ret]).Age);
		printf("\t\t     Tel->:");
		scanf("%s", people->Data[ret].Tel);
		printf("\t\t     Add->:");
		scanf("%s", people->Data[ret].Address);
	}
	else
	{
		printf("\t\t     没有该成员！\n");
		system("pause");
		return;
	}
}
//排序
void BubbleSort_person(Book* people)
{
	if (people == NULL)
	{
		printf("\t\t     空通讯录！\n\t\t     ");
		system("pause");
		return;
	}
	int i = 0;
	for (; i<people->count - 1; ++i)
	{
		int j = 0;
		for (; j<people->count - 1 - i; ++j)
		{
			if (strcmp(people->Data[j].Name, people->Data[j + 1].Name) > 0)
			{
				Person tmp = people->Data[j];
				people->Data[j] = people->Data[j + 1];
				people->Data[j+1] = tmp;
			}
		}
	}
	show_person(people);
}
void color() //自定义函根据参数改变颜色   
{
	//static int x = 9;
	SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), rand()%7+9);    //只有一个参数，改变字体颜色
	//if (x == 16)
	//	x = 9;
}
//static void change_color()
//{
//	static int i = 0;
//	char *str[20];
//	sprintf((char*)str, "color %x%x",0,15 - i);
//	system((const char*)str);
//	i++;
//	if (15 == i)
//		i = 0;
//}

void menu()
{
		system("cls");
		printf("\t\t     ******************************通讯录管理系统*****************************\n\n");
		color();
		printf("\t\t     **************1.添加联系人**********************2.删除联系人*************\n\n");
		color();
		printf("\t\t     **************3.查找联系人**********************4.修改联系人*************\n\n");
		color();
		printf("\t\t     **************5.显示联系人**********************6.清空联系人*************\n\n");
		color();
		printf("\t\t     **************7.排序联系人**********************0.退出此程序*************\n\n");
		color();
		printf("\t\t     *************************************************************************\n\n");
}

int main()
{
	srand((size_t)time(NULL));
	Book people;
	Initbook(&people);
	while (1)
	{
		//change_color();
		menu();
		int n = 0;
		printf("\t\t     请选择:> ");
		scanf("%d", &n);
		switch (n)
		{
		case 1:
			Add_person(&people);
			break;
		case 2:
			Del_person(&people);
			break;
		case 3:
			Find_person(&people);
			break;
		case 4:
			Change_person(&people);
			break;
		case 5:
			show_person(&people);
			break;
		case 6:
			Desbook(&people);
			Initbook(&people);
			break;
		case 7:
			BubbleSort_person(&people);
			break;
		case 0:
			save(&people);
			free((&people)->Data);
			color();
			printf("\t\t     感谢您的使用，再见！");
			Sleep(800);
			exit(0);
		default:
			{
				   printf("\t\t     input error!\n\t\t     ");
				   system("pause");
				   break;
			}
		}
	}
	return 0;
}

这个通讯录我加入了一点花里胡哨的元素：每次操作完毕都会使背景变色，你可以试试哦~~
修订信息：于2018.5.31加入文件保存功能。