C中模拟实现一个简单的通讯录，最全功能代码

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本文链接： https://blog.csdn.net/ZhangaZhaoLong/article/details/84038441

1. #ifndef info_h
   #define info_h

   #include <stdio.h>
   #include <stdlib.h>
   #include <string.h>
   
   #define NUM 1000
   #define SIZE 1024
   
   void init();
   int menu();
   void add_user();
   void print_user();
   void del_user();
   void modify_user();
   void find_user();
   void clear_user();
   
   #endif//__info_h__
   

2. #define _CRT_SECURE_NO_WARNINGS 1

   #include "info.h"
   
   enum
   {
   	ADD = 1,
   	DEL,
   	MODIFY,
   	FIND,
   	PRINT,
   	CLEAR,
   	EXIT,
   };
   
   int main()
   {
   	int choice = 0;
   
   	init();
   	do
   	{
   		choice = menu();
   		switch (choice)
   		{
   		case ADD:
   		{
   			add_user();
   			break;
   		}
   		case DEL:
   		{
   			del_user();
   			break;
   		}
   		case MODIFY:
   		{
   			modify_user();
   			break;
   		}
   		case FIND:
   		{
   			find_user();
   			break;
   		}
   		case PRINT:
   		{
   			print_user();
   			break;
   		}
   		case CLEAR:
   		{
   			clear_user();
   			break;
   		}
   		case EXIT:
   		{
   			printf("Good baby!\n");
   			break;
   		}
   		default:
   		{
   			printf("输入有误，请重新输入！\n");
   			break;
   		}
   		}
   	} while (choice != EXIT);
   
   	system("pause");
   	return 0;
   }
   

3. #define _CRT_SECURE_NO_WARNINGS 1

   #include "info.h"
   
   typedef struct userinfo
   {
   	char name[SIZE];
   	char telphone[SIZE];
   }userinfo;
   
   typedef struct usercount
   {
   	userinfo usernum[NUM];
   	int size;
   }usercount;
   usercount user_count;
   
   void init()
   {
   	user_count.size = 0;
   	memset(user_count.usernum, 0x0, sizeof(user_count.usernum));
   }
   
   int menu()
   {
   	int choice = 0;
   
   	printf("***************************************\n");
   	printf("*************   *1.ADD*   *************\n");
   	printf("*************   *2.DEF*   *************\n");
   	printf("*************   *3.MODIFY*   **********\n");
   	printf("*************   *4.FIND*   ************\n");
   	printf("*************   *5.PRINT*   ***********\n");
   	printf("*************   *6.CLEAR*   ***********\n");
   	printf("*************   *7.EXIT*   ************\n");
   	printf("***************************************\n");
   	while (1)
   	{
   		scanf("%d", &choice);
   		if (choice > 0 && choice <= 7)
   		{
   			return choice;
   		}
   		else
   		{
   			printf("输入错误，请重新输入！\n");
   		}
   	}
   }
   
   void add_user()
   {
   	if (user_count.size >= SIZE)
   	{
   		printf("用户已满！\n");
   	}
   	else
   	{
   		printf("请添加一个新用户！\n");
   		printf("请输入要添加人的姓名:\n");
   		scanf("%s", user_count.usernum[user_count.size].name);
   		printf("请输入要添加人的电话号码:\n");
   		scanf("%s", user_count.usernum[user_count.size].telphone);
   		printf("添加成功！\n");
   		++user_count.size;
   	}
   }
   
   void print_user()
   {
   	int i = 0;
   
   	printf("打印所有用户信息！\n");
   	for (i = 0; i < user_count.size; i++)
   	{
   		printf("[%d] %s %s\n", i, user_count.usernum[i].name, user_count.usernum[i].telphone);
   	}
   	printf("共打印了%d条用户信息\n", i);
   }
   
   void del_user()//顺序
   {
   	char user[SIZE] = { 0 };
   	int i = 0;
   
   	printf("删除用户！\n");
   	printf("请输入要删除的用户姓名：\n");
   	scanf("%s", user);
   	for (i = 0; i < user_count.size; i++)
   	{
   		if (strcmp(user, user_count.usernum[i].name) == 0)
   		{
   			user_count.usernum[i] = user_count.usernum[user_count.size - 1];
   		}
   	}
   	printf("删除用户成功！\n");
   	user_count.size--;
   }
   
   void modify_user()
   {
   	char user[SIZE] = { 0 };
   	int i = 0;
   
   	printf("修改一个用户\n");
   	printf("请输入要修改用户的姓名：\n");
   	scanf("%s", user);
   	for (i = 0; i < user_count.size; i++)
   	{
   		if (strcmp(user, user_count.usernum[i].name) == 0)
   		{
   			printf("[%d] %s %s\n", i, user_count.usernum[i].name, user_count.usernum[i].telphone);
   			printf("请输入修改过的名字：\n");
   			scanf("%s", user_count.usernum[i].name);
   			printf("请输入修改过的手机号：\n");
   			scanf("%s", user_count.usernum[i].telphone);
   			printf("[%d] %s %s\n", i, user_count.usernum[i].name, user_count.usernum[i].telphone);
   		}
   	}
   	printf("修改成功！\n");
   }
   
   void find_user()
   {
   	char user[SIZE] = { 0 };
   	int i = 0;
   
   	printf("查找一个用户！\n");
   	printf("请输入要查找的用户的姓名：\n");
   	scanf("%s", user);
   	for (i = 0; i < user_count.size; i++)
   	{
   		if (strcmp(user, user_count.usernum[i].name) == 0)
   		{
   			printf("[%d] %s %s\n", i, user_count.usernum[i].name, user_count.usernum[i].telphone);
   		}
   	}
   	printf("查找成功,共找到了%d条结果！\n", i);
   }
   
   void clear_user()
   {
   	char a[SIZE] = { 0 };
   
   	printf("您确认要全部清除吗？(y/n)\n");
   	scanf("%s", a);
   	if (strcmp("y", a) == 0)
   	{
   		init();
   	}
   }