C++学习笔记-day05

通讯录管理系统

功能简介：能够通过菜单界面添加联系人、显示联系人、删除联系人、查找联系人、修改联系人、清空联系人。

 

#include<iostream>
using namespace std;

#define MAX 1000

//联系人结构体
struct Person
{
    string m_Name; //姓名
    int m_Sex;     //性别: 1、男 2、女
    int m_Age;     //年龄
    string m_Phone;//电话
    string m_Addr; //住址

};

//通讯录结构体
struct Addressbooks
{
    struct Person personArray[MAX]; //联系人数组
    int m_size;                      //联系人个数

};

//1、添加联系人
void addPerson(Addressbooks* abs)
{
    if (abs->m_size == MAX)
    {
        cout << "通讯录已满，无法添加！" << endl;
        return;
    }
    else
    {
        //添加具体联系人

        //姓名
        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---男" << endl;
        cout << "2---女" << endl;
        int sex = 0;
        
        while (true)
        {
            //如果输入的是1或者2,可以退出循环，如果是别的，重新输入
            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)
        {
            //如果输入的是1或者2,可以退出循环，如果是别的，重新输入
            cin >> age;
            if (age >0 && age <150 )
            {
                abs->personArray[abs->m_size].m_Age = age;
                break;
            }
            cout << "输入有误，请重新输入" << endl;
        }

        //电话
        cout << "请输入联系电话：" << endl;
        string phone;
        cin >> phone;
        abs->personArray[abs->m_size].m_Phone = phone;

        //住址
        cout << "请输入家庭住址：" << endl;
        string address;
        cin >> address;
        abs->personArray[abs->m_size].m_Addr=address;

        //更新通讯录人数
        abs->m_size++;
        cout << "添加成功！" << endl;

        system("pause");//请按任意键继续
        system("cls");//清屏的操作

    }
}
//2、显示联系人

void showPerson(Addressbooks* abs)
{
    //判断通讯录中人数是否为零，如果为零，提示记录为空
    //如果不为0，显示通讯录的联系人信息

    if (abs->m_size == 0)
    {
        cout << "当前通讯录记录为空" << endl;

    }
    else 
    {
        for (int i = 0; i < abs->m_size; i++)
        {
            cout << "姓名:" << abs->personArray[i].m_Name << "\t";
            cout << "性别:" << (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"); //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所在数组中的具体位置，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了
        if (name == abs->personArray[i].m_Name)
        {
            return i;//返回这个人在数组中的下标
        }
    }
    return -1;//没找到，则返回-1
}
//3、删除联系人
void deletePerson(Addressbooks* abs)
{
    cout << "请输入你要删除的联系人" << endl;
    string name;
    cin >> name;

    //ret==-1 没查到 ret！=-1 查到了
    int ret = isExist(abs, name);
    if (ret != -1)
    {
        //查找到人，要进行删除操作
        for (int i = ret; i < abs->m_size; i++)
        {
            abs->personArray[i] = abs->personArray[i + 1];
        }
        abs->m_size--;  //更新通讯录的人员数
        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：" << endl;
    string name;
    cin >> name;
    //判断指定的联系人是否存在
    int ret=isExist(abs, name);
    if (ret != -1)
    {
        //找到了联系人
        cout << "姓名：" << abs->personArray[ret].m_Name << "\t";
        cout << "性别：" << abs->personArray[ret].m_Sex << "\t";
        cout << "年龄：" << abs->personArray[ret].m_Age << "\t";
        cout << "电话：" << abs->personArray[ret].m_Phone << "\t";
        cout << "家庭住址：" << abs->personArray[ret].m_Addr << endl;
    }
    else
    {
        //未找到联系人
        cout << "查无此人" << endl;
    }
    system("pause"); //按任意键
    system("cls");   //清屏
}
//5、修改指定的联系人
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)
    {
        //找到了联系人
        string name;
        cout << "请输入姓名：" << endl;
        cin >> name;
        abs->personArray[ret].m_Name = name;
        int sex;
        cout << "请输入性别：" << endl;
        cout << "1--男" << endl;
        cout << "2--女" << endl;
        while (true)
        {
            cin >> sex;
            if (sex == 1 || sex == 2)
            {
                //输入正确，退出循环输入
                abs->personArray[ret].m_Sex = sex;
                break;
            }
            cout << "输入有误，请重新输入" << endl;
        }
        int age;
        cout << "请输入年龄：" << endl;
        cin >> age;
        abs->personArray[ret].m_Age = age;
        string phone;
        cout << "请输入联系电话：" << endl;
        cin >> phone;
        abs->personArray[ret].m_Phone = phone;
        string address;
        cout << "请输入家庭住址：" << endl;
        cin >> address;
        abs->personArray[ret].m_Addr = address;

        cout << "修改成功！" << endl;
    }
    else
    {
        //未找到联系人
        cout << "查无此人！" << endl;
    }
    system("pause");
    system("cls");
}
//6、清空联系人
void cleanPerson(Addressbooks* abs)
{
    abs->m_size = 0; //将当前记录的联系人数量置为0，做逻辑清空操作
    cout << "通讯录已清空" << endl;
    system("pause");
    system("cls");
}

//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;
}
int main()
{

    //创建通讯录结构体变量
    Addressbooks abs;
    //通讯录初始联系人数量为9
    abs.m_size = 0;

    int select = 0;

    
    while (true)
    {
        //菜单的调用
        showMenu();

        cin >> select;
        switch (select)
        {
        case 1: //1、添加联系人
            addPerson(&abs); //利用地址传递，可以修饰实参
            break;
        case 2: //2、显示联系人
            showPerson(&abs);
            break;
        case 3:  //3、删除联系人
            deletePerson(&abs);
            break;
        case 4:  //4、查找联系人 
            findPerson(&abs);
            break;
        case 5:  //5、修改联系人
            modifyPerson(&abs);
            break;
        case 6:  // 6、清空联系人
            int a;
            cout << "请确认是否真的清空所有联系人" << endl;
            cout << "1-是"<<endl;
            cout << "2-否"<<endl;
            cin >> a;
            if (a == 1)
            {
                cleanPerson(&abs);
            }
            else
            {
                system("pause");
                system("cls");
            }
            break;
        case 0:  //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;
}