通讯录管理系统（低配版）

//
// Created by du on 2022/2/1.
//
//只能存放1000个联系人
#include <iostream>
#include <string>
#include <iomanip>
#define MAX 1000
using namespace std;
//函数作用：显示菜单
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;
}

struct Person
{
    string m_Name;
    string m_sex; //只有男女，变性三种
    int m_age;
    string m_Phone;
    string m_Addr;
};
//通讯录结构体
struct Addressbooks
{
    //通讯录中保存的联系人数组
    Person personArray[MAX];

    //通讯录当前联系人的个数
    int m_size;
};
//1.函数功能：添加联系人，上限为1000人
void addPerson(Addressbooks *abs)
{
    if(abs->m_size > MAX)
    {
        cout << "通讯录已满，请清除后在添加"<<endl;
        return;  //return无返回值
    }
    else
    {
        //添加具体的联系人

        //姓名
        string name;
        cout << "请输入姓名："<<endl;
        //cin >> name;
        getchar();
        getline(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;*/
        string sex = " ";
        while (true)
        {
            cin >> sex;
            if (sex == "男" || sex == "女"||sex =="变性")
            {
                abs->personArray[abs->m_size].m_sex = sex;
                break;
            }
            else cout <<"！！！！！输入有误，重新输入！！！！！"<<endl;
        }
        //年龄
        cout << "请输入年龄：" << endl;
        int age;
        cin>>age;
        abs->personArray[abs->m_size].m_age = age;
        //电话
        cout <<"请输入电话号码："<<endl;
        string tel = " ";
        cin >> tel;
        abs->personArray[abs->m_size].m_Phone = tel;
        //地址
        cout <<"请输入家庭地址："<<endl;
        string address = " ";
        cin >> address;
        abs->personArray[abs->m_size].m_Addr = address;
        //更新通讯录的人数
        abs->m_size ++;
        cout <<"*********添加成功*******"<<endl;
        system("pause");
        system("cls"); //功能：清屏
    }
}
void showPerson(Addressbooks *abs)
{
    //判断通讯录里面的人数是否为0,如果为零，返回空
    if(abs->m_size==0)
        cout << "通讯录为空"<<endl;
    else
    {
        for(int i = 0;i <abs->m_size;i++)
        {
            cout << "姓名："<<abs->personArray[i].m_Name<<'\t'
            <<"性别"<<abs->personArray[i].m_sex<<'\t'
            <<"年龄："<<abs->personArray[i].m_age<<'\t'
            <<"电话号码："<<abs->personArray[i].m_Phone<<'\t'
            <<"家庭地址："<<abs->personArray[i].m_Addr<<endl;
        }
        cout <<"查询完毕\n";
    }
    system("pause");
    system("cls");

}

/*
int isExist(Addressbooks *abs)  //参数1：通讯录；参数2：要删除的人
{
    string name = " ";
    cout <<"输入你要删除的联系人："<<endl;
    cin >> name;
    for(int i = 0;i < abs->m_size;i++)
    {
        if(abs->personArray[i].m_Name == name)
        {
            return i; //找到了，返回下标
        }
    }
    return -1;  //没找到，返回-1；
}
*/
//3.函数功能：删除联系人
void delPerson(Addressbooks *abs)
{
    int flag = -1;
    string name = " ";
    cout <<"输入你要删除的联系人："<<endl;
    cin >> name;
    for(int i = 0;i < abs->m_size;i++)
    {
        if(abs->personArray[i].m_Name == name)
        {
            flag = i; //找到了，返回下标
        }
    }
    if(flag == -1) cout << "查无此人\n";
    else
    {
        for (int j = flag; j < abs->m_size; j++) {
            abs->personArray[j] = abs->personArray[j + 1];
        }
        abs->m_size--;
    }
    system("pause");
    system("cls");
}
//4.函数功能：查找信息
void findPerson(Addressbooks *abs)
{
    string name = " ";
    int flag = -1;
    cout << "请输入你要查找的名字" <<endl;
    cin >> name;
    for(int i = 0;i < abs->m_size; i++)
    {
        if(abs->personArray[i].m_Name == name)
        {
            flag = i;
            cout << "找到了\n";
            cout << "姓名："<<abs->personArray[i].m_Name<<'\t'
                 <<"性别："<<abs->personArray[i].m_sex<<'\t'
                 <<"年龄："<<abs->personArray[i].m_age<<'\t'
                 <<"电话号码："<<abs->personArray[i].m_Phone<<'\t'
                 <<"家庭地址："<<abs->personArray[i].m_Addr<<endl;
        }

    }
    if(flag == -1) cout << "查无此人\n";
    system("pause");
    system("cls");
}
//5.函数功能：修改联系人的信息
void changePerson(Addressbooks *abs)
{
    string oldName = " ";
    int flag = -1;
    cout << "请输入你要修改联系人的名字：\n";
    cin >> oldName;
    for(int i = 0;i < abs->m_size;i++)
    {
        if(abs->personArray[i].m_Name == oldName)
        {
            flag = i;
            cout << "新名字：\n";
            cin >> abs->personArray[i].m_Name;
            cout << "新性别：\n";
            string sex = " ";
            while (true)
            {
                cin >> sex;
                if (sex == "男" || sex == "女"||sex =="变性")
                {
                    abs->personArray[abs->m_size].m_sex = sex;
                    break;
                }
                else cout <<"！！！！！输入有误，重新输入！！！！！"<<endl;
            }
            cout << "新年龄：\n";
            cin >> abs->personArray[i].m_age;
            cout << "新电话号码：\n";
            cin >> abs->personArray[i].m_Phone;
            cout << "新地址：\n";
            cin >> abs->personArray[i].m_Addr;
            cout <<"修改完毕";
        }
    }
    if(flag == -1) cout <<"没有此人，无法删除\n";
    system("pause");//停顿
    system("cls"); //清屏
}

//6.函数功能：清空通讯录
void cleanPerson(Addressbooks *abs)
{
    abs->m_size = 0;
    system("pause");
    system("cls");
}
int main()
{

    char select ;//创建用户输入，如果是整型，输入非int就会结束程序，因此采用char型

    //创建一个通讯录的结构体变量
    Addressbooks abs;
    //初始化通讯录中当前的人数
    abs.m_size = 0;
    while (true)
    {
        //菜单调用
        showMenu();
        cin >> select;//输入选择
        switch (select) {
            case '1':     //1、添加联系人
                addPerson(&abs);   //利用地址传递可以修改实参
                break;
            case '2':     //2、显示联系人
                showPerson(&abs);
                break;
            case '3':     //3、删除联系人
            /*{         //用于测试
                int pos = isExist(&abs);
                if(pos!=1)cout<<"没有\n";
                else cout<<"有\n";
                break;
            }*/
                delPerson(&abs);
                break;
            case '4':     //4、查找联系人
                findPerson(&abs);
                break;
            case '5':     //5、修改联系人
                changePerson(&abs);
                break;
            case '6':     //6、清空联系人
                cleanPerson(&abs);
                break;
            case '0':     //0、退出通讯录
                cout << "欢迎下次使用" << endl;
                return 0;
            default: {
                cout << "输入有误，重新输入\n";
                system("pause");
                system("cls");
                break;
            }
        }
    }
    // return 0;
 }