C++入门

#include
#define MAX 1000
using namespace std;

//  通讯录管理系统，该项目只有 单个 cpp文件
//1.添加联系人
//2.显示联系人
//3.删除联系人
//4.查找联系人
//5.修改联系人
//6.清空联系人
//7.退出系统

// 个人信息
struct Person
{
	string m_Name;
	int m_Sex;
	int m_Age;
	string m_Phone;
	string m_Addr;
};

// 通信录结构体
struct Addressbooks
{
	struct Person personArray[MAX];
	int m_Size;
};

// 界面菜单
void showMenu()
{
	cout << "*************************" << endl;
	cout << "******  这是菜单  *******" << 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;
}


// 添加联系人
void addPenson(Addressbooks* abs)
{
	if (abs->m_Size == MAX)
	{
		cout << "通讯录已满，无法添加" << endl;
		return;
	}
	else
	{
		string name;
		cout << "请输入姓名：" << endl;
		cin >> name;
		abs->personArray[abs->m_Size].m_Name = name;

		// 性别
		cout << "请输入性别：" << endl;
		cout << "1. 表示男生" << endl;
		cout << "2. 表示女生" << endl;

		int sex = 0;
		// 假循环
		while (true)
		{
			cin >> sex;
			if (sex == 1 || sex == 2)
			{
				abs->personArray[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;
		while (true)
		{
			cin >> age;
			if (age >= 0 || age <= 150)
			{
				abs->personArray[abs->m_Size].m_Age = age;
				break;
			}
			cout << "请输入正确年龄！" << endl;
		}

		// 电话
		cout << "输入电话：" << endl;
		string phone;
		cin >> phone;
		abs->personArray[abs->m_Size].m_Phone = phone;

		//住址
		cout << "最后输入住址：" << endl;
		string addr;
		cin >> addr;
		abs->personArray[abs->m_Size].m_Addr = addr;

		//更新通讯录人数
		abs->m_Size++;         //通讯录中人数加1

		//完成添加提示
		cout << "恭喜您添加成功！" << endl;

		system("pause"); //按任意键继续
		system("cls");   //清屏操作

	}
}

// 显示联系人
void showPerson(Addressbooks* abs)
{
	// 判空
	if (abs->m_Size == 0)
	{
		cout << "通讯录为空！请添加联系人" << endl;

	}
	else
	{
		for (int i = 0; i < abs->m_Size; i++)
		{
			cout << "姓名：" << abs->personArray[i].m_Name << "t";
			cout << "姓别：" << (abs->personArray[i].m_Sex == 1 ? "男" : "女" ) << "t";
			cout << "年龄：" << abs->personArray[i].m_Age << "t";
			cout << "电话：" << abs->personArray[i].m_Phone << "t";
			cout << "住址：" << abs->personArray[i].m_Addr << endl;
		}
	}

	system("pause");
	system("cls");
}

// 删除联系人,先查询是否存在
int isExist(Addressbooks* abs, string name)
{
	for (int i = 0; i < abs->m_Size; i++)
	{
		if (abs->personArray[i].m_Name == name)
		{
			return i;
		}
	}
	return -1;

}

// 删除
void deletePerson(Addressbooks* abs)
{
	cout << "请输入删除联系人的姓名:" << endl;
	string name;
	cin >> name;
	int ret = isExist(abs, name);
	if (ret != -1)
	{
		// 数据前移
		for (int i = ret; i < abs->m_Size; i++)
		{
			abs->personArray[i] = abs->personArray[i + 1];
		}
		abs->m_Size--; // 更新人数
		cout << "删除成功！" << endl;
	}
	else
	{
		cout << "查无此人，请重新输入！" << endl;
	}


	system("pause");
	system("cls");
}

// 查找联系人
void findPerson(Addressbooks* abs)
{
	cout << "请输入要查找的联系人：" << endl;
	string name;
	cin >> name;

	// 判空
	int ret = isExist(abs, name);
	if (ret != -1)
	{
		cout << "姓名：" << abs->personArray[ret].m_Name << "t";
		cout << "姓别：" << (abs->personArray[ret].m_Sex == 1 ? "男" : "女") << "t";
		cout << "年龄：" << abs->personArray[ret].m_Age << "t";
		cout << "电话：" << abs->personArray[ret].m_Phone << "t";
		cout << "住址：" << abs->personArray[ret].m_Addr << endl;
	}
	else
	{
		cout << "查无此人，请重新输入！" << endl;
	}

	system("pause");
	system("cls");
}

// 修改联系人
void modifyPerson(Addressbooks * abs)
{
	cout << "请输入要修改的联系人：" << endl;
	string name;
	cin >> name;
	// 判空
	int ret = isExist(abs, name);
	if (ret != -1)
	{
		cout << "请输出修改后的姓名：" << endl;
		string name;
		cin >> name;
		abs->personArray[ret].m_Name = name;

		cout << "请输入修改的性别： " << endl;
		cout << "1代表男生 " << endl;
		cout << "2代表女生 " << endl;
		int sex = 0;
		// 假循环
		while (true)
		{
			cin >> sex;
			if (sex == 1 || sex == 2)
			{
				abs->personArray[ret].m_Sex = sex;
				break;
			}
			cout << "输入有误，请重新输入！" << endl;
		}

		// 年龄
		cout << "请输入修改的年龄：" << endl;
		int age = 0;
		while (true)
		{
			cin >> age;
			if (age >= 0 || age <= 150)
			{
				abs->personArray[ret].m_Age = age;
				break;
			}
			cout << "请输入正确年龄！" << endl;
		}

		// 电话
		cout << "输入电话：" << endl;
		string phone;
		cin >> phone;
		abs->personArray[ret].m_Phone = phone;

		//住址
		cout << "最后输入住址：" << endl;
		string addr;
		cin >> addr;
		abs->personArray[ret].m_Addr = addr;

		cout << "恭喜您修改成功！" << endl;

		
	}
	else
	{
		cout << "查无此人，请重新输入！" << endl;
	}

	system("pause");
	system("cls");
}

// 清空联系人
void cleanPerson(Addressbooks * abs)
{
	abs->m_Size = 0;
	cout << "通讯录已清空！" << endl;
	system("pause");
	system("cls");
}


int main()
{
	// 创建通讯录
	Addressbooks abs;
	abs.m_Size = 0;

	int select = 0;

	while (true)
	{
		showMenu();
		cout << "请输入您的操作数字：";
		cin >> select;

		switch (select)
		{
		case 1:
			// 添加联系人
			addPenson(&abs);
			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:
			// 退出系统
			cout << "欢迎下次再使用！" << endl;
			system("pause");
			return 0;
			break;

		default:
			break;
		}
	}

	system("pause");
	return 0;

}

参考b站视频