【C++】通讯录系统的实现

通讯录的实现是C++基础内容，本文参考黑马程序员教程，调试基本没有问题，主要还能够提升的地方在于，有些输入错误的信息，比如年龄输入成字母等问题，需要增加可重复输入的部分。

/*************************************************************************
    > File Name: main.cpp
    > Author:Yanzu
    > Mail:ruiwang22@foxmail.com
    > Created Time: Wed 25 Aug 2021 09:40:45 PM CST
 ************************************************************************/

#include<iostream>
#include<string>
using namespace std;
#define MAX 1000

//设计联系人结构体

struct Person {
    string m_Name;
    //性别 1 男  2 女
    int m_Sex;

    int m_Age;

    string m_Phone;

    string m_Addr;

};

//设计通讯录结构体
struct Addressbooks {
    //通讯录中保存的联系人数组
    struct Person personArray[MAX];

    //通讯录中记录联系人个数
    int m_Size;

};

//添加联系人
void addPerson(Addressbooks* abs) {
    //判断通讯录是否已满，满了就无法再添加
    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，因为输入的是正确值
            //如果输入错误，需要重新输入
            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;
        cin >> age;
        abs->personArray[abs->m_Size].m_Age = age;

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

        //住址
        cout << "请输入住址： " << 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");//清屏操作
    }
}

//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，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");
    system("cls");
}

//检测联系人是否存在，存在则返回具体位置，不存在返回-1
//参数1 通讯录 参数2 对比姓名
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 (abs->personArray[i].m_Name == name) 
            return i;//找到姓名
    }
    return -1;//没找到，返回-1
}

void showOnePerson(Addressbooks* abs, int 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;
}

void deletePerson(Addressbooks* abs) {
    cout << "请输入您要删除的联系人：" << endl;

    string name;
    cin >> name;

    //ret == -1  未查到
    //ret != -1   查到
    int ret = isExist(abs, name);

    if (ret != -1) {
        //查到要找的人，进行删除操作
        for (int i = ret; i < abs->m_Size; i++) {
            //数据前移
            abs->personArray[i] = abs->personArray[i + 1];
        }
        abs->m_Size--;//更新成员数
        cout << "删除成功！" << endl;
    }
    else {
        cout << "查无此人" << endl;
    }
    system("pause");
    system("cls");
}

//查找指定的联系人信息
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通讯录中
    int ret = isExist(abs, name);

    if (ret != -1)//找到联系人
    {
        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 << "住址：" << abs->personArray[ret].m_Addr << endl;
    }
    else {
        cout << "查无此人" << endl;
    }
    //任意键按下后清屏
    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;
    
    int ret = isExist(abs, name);
    if (ret != -1) {//找到指定联系人
        //姓名
        string name;
        cout << "请输入姓名：" << endl;
        cin >> name;
        abs->personArray[ret].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) {
            cin >> sex;
            if (sex == 1 || sex == 2) {
                abs->personArray[ret].m_Sex = sex;//输入正确，退出循环输入
                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->personArray[ret].m_Age = age;

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

        //住址
        cout << "请输入住址：" << endl;
        string address;
        cin >> address;
        abs->personArray[ret].m_Addr = address;
        cout << "您已修改完成" << endl;
    }
    else {
        cout << "查无此人" << endl;
    }

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

void cleanPerson(Addressbooks* abs) {
    abs->m_Size = 0;
    cout << "通讯录已清空" << endl;
    system("pause");
    system("cls");
}
//1、显示菜单界面
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 << "*************************" << endl;
}

int main() {

    //创建通讯录结构体变量
    struct Addressbooks abs;

    abs.m_Size = 0;

    int select = 0;//创建用户选择输入的变量

    while (true) {

        //菜单调用
        showMenu();

        cin >> select;

        switch (select) {
        case 1: //添加联系人
            addPerson(&abs);//利用地址传递才能修改形参
            break;
        case 2: //显示联系人
            showPerson(&abs);
            break;
        case 3: //删除联系人
            deletePerson(&abs);
         /* { cout << "请输入删除人数的姓名：" << endl;
        string name;
        cin >> name;
        if (isExist(&abs, name) == -1) {
            cout << "查无此人" << endl;
        }
        else {
            cout << "找到此人" << endl;
        }
        int ret = isExist(&abs, name);
        cout << "列表里的人数有：" << ret << endl;
        }*/
            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;
            return 0;
            break;
        default:
            break;
        }
    }

    return 0;
}