C++学习笔记（2）

通讯录管理系统

#include<iostream>
using namespace std;
#define MAX 1000  //通讯录上限

// 设计联系人结构体
struct Person
{
	//姓名
	string m_Name;
	//性别
	int m_Sex;
	//年龄
	int m_Age;
	//联系电话
	string m_Phone;
	//家庭住址
	string m_Addr;
};
// 设置通讯录结构体
struct Addressbooks
{
	//通讯录中保存的联系人数组
	struct Person persongArray[MAX];
	//通讯录中当前记录的联系人个数
	int m_Size;
};

//菜单界面
void showMenu() 
{
	cout << "*************************" << endl;
	cout << "***** 1、添加联系人 *****" << endl;
	cout << "***** 2、显示联系人 *****" << endl;
	cout << "***** 3、删除联系人 *****" << endl;
	cout << "***** 4、查找联系人 *****" << endl;
	cout << "***** 5、修改联系人 *****" << endl;
	cout << "***** 6、清空联系人 *****" << endl;
	cout << "***** 0、退出通讯录 *****" << endl;
	cout << "*************************" << endl;
}
//1、添加联系人
void addPerson(Addressbooks * abs)
{
	//判断通讯录是否已满，如果满了就不在添加
	if (abs->m_Size == MAX)
	{
		cout << "通讯录已满，无法添加！" << endl;
		return;
	}
	else
	{
		//添加联系人
		
		//姓名
		string name;
		cout << "请输入姓名：" << endl;
		cin >> name;
		abs->persongArray[abs->m_Size].m_Name = name;
		//性别
		cout << "请输入性别：" << endl;
		cout << "1---男" << endl;
		cout << "1---女" << endl;
		int sex = 0;
		while (true)
		{
			//如果输入错误，重新输入
			//如果输入 1 或 2 ，输入正确，退出循环
			cin >> sex;
			if (sex == 1 || sex == 2)
			{
				abs->persongArray[abs->m_Size].m_Sex = sex;
				break;
			}
			cout << "输入有误，请重新输入" << endl;
		}
		//年龄
		cout << "请输入年龄：" << endl;
		int age = 0;
		cin >> age;
		abs->persongArray[abs->m_Size].m_Age = age;
		//联系电话
		cout << "请输入联系电话：" << endl;
		string phone;
		cin >> phone;
		abs->persongArray[abs->m_Size].m_Phone = phone;
		//家庭住址
		cout << "请输入地址：" << endl;
		string address;
		cin >> address;
		abs->persongArray[abs->m_Size].m_Addr = address;
		//更新通讯录人数
		abs->m_Size++;
		cout << "添加成功！" << endl;
		system("pause");//按任意键继续
		system("cls");//清屏
	}
}
//2、显示联系人
void showPerson(Addressbooks * abs)
{
	//判断通讯录中人数是否为 0 ，如果为 0 提示记录为空
	//如果不为 0 ，显示记录的联系人信息
	if (abs->m_Size == 0)
	{
		cout << "当前的纪录为空 " << endl;
		system("pause");//按任意键继续
		system("cls");//清屏
	}
	else
	{
		for (int i = 0; i < abs->m_Size; i++)
		{
			cout << "姓名：" << abs->persongArray[i].m_Name << '\t';
			cout << "性别：" << (abs->persongArray[i].m_Sex == 1 ? "男" : "女") << '\t';
			cout << "年龄：" << abs->persongArray[i].m_Age << '\t';
			cout << "联系电话：" << abs->persongArray[i].m_Phone << '\t';
			cout << "住址：" << abs->persongArray[i].m_Addr << endl;
		}
		system("pause");//按任意键继续
		system("cls");//清屏
	}
}
//检测联系人是否存在，如果存在，返回联系人在数组中的位置；如果不存在，返回-1
int isExist(Addressbooks* abs, string name)
{
	for (int i = 0; i < abs->m_Size; i++)
	{
		//找到用户输入的姓名
		if (abs->persongArray[i].m_Name == name)
		{
			return i;//找到后，返回在数组中的下标编号
		}
	}
	return -1;//如果遍历结束都没找到，返回-1
}
//3、删除指定联系人
void deletePerson(Addressbooks* abs)
{
	cout << "请输入您要删除的联系人姓名：" << endl;
	string name;
	cin >> name;
	//ret == -1 未查到
	//ret != -1  查到
	int ret = isExist(abs, name);
	if (ret != -1)
	{
		//查找到此人，进行删除
		for (int i = ret; i < abs->m_Size; i++)
		{
			//数据前移
			abs->persongArray[i] = abs->persongArray[i + 1];
		}
		abs->m_Size--;//更新通讯录中的人员数
		cout << "删除成功！" << endl;
	}
	else
	{
		cout << "查无此人！" << endl;

	}
	system("pause");
	system("cls");
}
//4、查找联系人
void findPerson(Addressbooks* abs)
{
	cout << "请输入您要查找的联系人姓名：" << endl;
	string name;
	cin >> name;
	//判断查找的联系人是否存在通讯录中
	int ret = isExist(abs, name);
	if (ret != -1)//找到联系人
	{
		cout << "姓名：" << abs->persongArray[ret].m_Name << '\t';
		cout << "性别：" << (abs->persongArray[ret].m_Sex == 1 ? "男" : "女") << '\t';
		cout << "年龄：" << abs->persongArray[ret].m_Age << '\t';
		cout << "联系电话：" << abs->persongArray[ret].m_Phone << '\t';
		cout << "住址：" << abs->persongArray[ret].m_Addr << endl;
	}
	else
	{
		cout << "查无此人！" << endl;
	}
	system("pause");
	system("cls");
}
//5、修改指定联系人信息
void modifyPerson(Addressbooks* abs)
{
	cout << "请输入您要修改的联系人" << endl;
	string name;
	cin >> name;
	int ret = isExist(abs, name);
	if (ret != -1)//找到联系人
	{
		//姓名
		string name;
		cout << "请输入姓名：" << endl;
		cin >> name;
		abs->persongArray[ret].m_Name = name;
		//性别
		cout << "请输入性别：" << endl;
		cout << "1---男" << endl;
		cout << "1---女" << endl;
		int sex = 0;
		while (true)
		{
			//如果输入错误，重新输入
			//如果输入 1 或 2 ，输入正确，退出循环
			cin >> sex;
			if (sex == 1 || sex == 2)
			{
				abs->persongArray[ret].m_Sex = sex;
				break;
			}
			cout << "输入有误，请重新输入" << endl;
		}
		//年龄
		cout << "请输入年龄：" << endl;
		int age = 0;
		cin >> age;
		abs->persongArray[ret].m_Age = age;
		//联系电话
		cout << "请输入联系电话：" << endl;
		string phone;
		cin >> phone;
		abs->persongArray[ret].m_Phone = phone;
		//家庭住址
		cout << "请输入地址：" << endl;
		string address;
		cin >> address;
		abs->persongArray[ret].m_Addr = address;
		//更新通讯录人数
		cout << "修改成功！" << endl;
	
	}
	else
	{
		cout << "查无此人！" << endl;
	}
	system("pause");//按任意键继续
	system("cls");//清屏
}
//6、清空通讯录
void cleanPerson(Addressbooks* abs)
{
	abs->m_Size = 0;//将通讯录记录的联系人数重置为零， 做逻辑清空
	cout << "通讯录已清空！" << endl;
	system("pause");//按任意键继续
	system("cls");//清屏
}


int main() 
{
	//创建结构体变量
	Addressbooks abs;
	//初始化通讯录中当前人员的个数
	abs.m_Size = 0;

	int select = 0;//创建用户选择输入的变量
	while (true) 
	{
		//调用菜单
		showMenu();
		cin >> select;
		switch (select) {
		case 1://添加联系人
			addPerson(&abs);//利用地址传递可以修饰实参
			break;
		case 2://显示联系人
			showPerson(&abs);
			break;
		case 3://删除联系人
			deletePerson(&abs);
			break;
		case 4://查找联系人
			findPerson(&abs);
			break;
		case 5://修改联系人
			modifyPerson(&abs);
			break;
		case 6://清空联系人
			cleanPerson(&abs);
			break;
		case 0://退出通讯录
			cout << "欢迎下次使用" << endl;
			system("pause");
			return 0;
			break;
		default:
			break;
		}
	}
	system("pause");
	return 0;
}

放假在家没事干，用上学期学的一点点C++知识写个通讯录管理系统(๑•̀ㅂ•́)و✧