C++ 第一个实战项目：通讯录系统管理

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

struct Person
{
    string m_Name;
    int m_Sex;
    int m_Age;
    string m_Phone;
    string m_Addr;
};

struct AddressBook
{
    Person personArray[MAX];
    int m_Size;
};



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(AddressBook* abs)
{
    if (abs->m_Size == MAX)
    {
        cout << "通讯录已满！" << endl;
        return;
    }

    else
    {
        // 1. 
        string name;
        cout << "输入姓名：" << endl;
        cin >> name;
        abs->personArray[abs->m_Size].m_Name = name;

        // 2. 
        int sex = 0;
        cout << "输入性别：（1---男， 2---女）" << endl;

        while (true)
        {
            cin >> sex;
            if (sex == 1 || sex == 2)
            {
                abs->personArray[abs->m_Size].m_Sex = sex;
                break;
            }

            cout << "输入错误，请重新输入：" << endl;
            

        }

        // 3. 
        int age;
        cout << "输入年龄：" << endl;
        cin >> age;
        abs->personArray[abs->m_Size].m_Age = age;

        // 4. 
        string phone_num;
        cout << "输入电话" << endl;
        cin >> phone_num;
        abs->personArray[abs->m_Size].m_Phone = phone_num;

        // 5. 
        string address;
        cout << "输入住址：" << endl;
        cin >> address;
        abs->personArray[abs->m_Size].m_Addr = address;   
    }

    cout << "添加成功！" << endl;
    abs->m_Size++;
    system("pause");
    system("cls");


}


// 2. 显示联系人
void showPerson(AddressBook* abs)
{
    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";
            cout << "性别：" << (abs->personArray[i].m_Sex == 1 ? "男" : "女") << "\t";
            cout << "年龄：" << abs->personArray[i].m_Age << "\t";
            cout << "电话号码：" << abs->personArray[i].m_Phone << "\t";
            cout << "住址：" << abs->personArray[i].m_Addr << "\t" << endl;

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

}


// 3.1 删除联系人（先判断是否存在）
int isExist(AddressBook* abs, string name)
{
    for (int i = 0; i < abs->m_Size; i++)
    {
        if (abs->personArray[i].m_Name == name)
        {
            return i;
        }
        
    }

    return -1;

}


// 3.2 删除
void deletePerson(AddressBook* abs, string name)
{
    int position = isExist(abs, name);
    if (position == -1)
    {
        cout << "查无此人！" << endl;
    }
    else
    {
        for (int i = position; i < abs->m_Size; i++)
        {
            abs->personArray[i].m_Name = abs->personArray[i + 1].m_Name;
            abs->personArray[i].m_Age = abs->personArray[i + 1].m_Age;
            abs->personArray[i].m_Sex = abs->personArray[i + 1].m_Sex;
            abs->personArray[i].m_Phone = abs->personArray[i + 1].m_Phone;
            abs->personArray[i].m_Addr = abs->personArray[i + 1].m_Addr;


        }

        abs->m_Size--;
    }

    cout << "删除成功！" << endl;
    system("pause");
    system("cls");


}


// 4.查找联系人
void findPerson(AddressBook* abs, string name)
{
    int position = isExist(abs, name);
    if (position == -1)
    {
        cout << "查无此人！" << endl;
    }
    else
    {
        cout << "姓名" << abs->personArray[position].m_Name << "\t"
            << "年龄" << abs->personArray[position].m_Age << "\t"
            << "性别" << (abs->personArray[position].m_Sex == 1 ? "男":"女") << "\t"
            << "电话号码" << abs->personArray[position].m_Phone << "\t"
            << "住址" << abs->personArray[position].m_Addr << "\t" << endl;
    }
    system("pause");
    system("cls");

}


// 5.修改联系人
void modifyPerson(AddressBook* abs)
{
    cout << "输入要修改的联系人：" << endl;
    string name;
    cin >> name;

    int position = isExist(abs, name);
    if (position == -1)
    {
        cout << "查无此人!" << endl;
    }

    else
    {
        // 1. 
        string the_name;
        cout << "输入姓名：" << endl;
        cin >> the_name;
        abs->personArray[position].m_Name = the_name;

        // 2. 
        int sex;
        cout << "输入性别：(1---男，2---女)" << endl;
        while (true)
        {
            cin >> sex;
            if (sex == 1 || sex == 2)
            {
                abs->personArray[position].m_Sex = sex;
                break;
            }
            cout << "输入错误，重新输入：" << endl;

        }

        // 3. 
        int age;
        cout << "输入年龄：" << endl;
        cin >> age;
        abs->personArray[position].m_Age = age;

        // 4. 手机号码 
        string phone;
        cout << "输入电话号码：" << endl;
        cin >> phone;
        abs->personArray[position].m_Phone = phone;

        // 5. 住址
        string address;
        cout << "输入地址： " << endl;
        cin >> address;
        abs->personArray[position].m_Addr = address;
    }

        cout << "修改成功！" << endl;
        system("pause");
        system("cls");


}


// 6. 清空联系人
void cleanPerson(AddressBook* abs)
{
    abs->m_Size = 0;
    cout << "通讯录清除成功！" << endl;
    system("pause");
    system("cls");

}


int main()
{
    int select = 0;
    AddressBook abs;
    abs.m_Size = 0;

    while (true)
    {
        showMenu();
        cin >> select;

        switch (select)
        {

        // 1. 添加联系人
        case 1:
            addPerson(&abs);
            break;

        // 2. 显示联系人
        case 2:
            showPerson(&abs);
            break;

        // 3. 删除联系人
        case 3:
        {
            cout << "输入要删去的联系人：" << endl;
            string name;
            cin >> name;
            deletePerson(&abs, name);
        }
            break;

        // 4. 查找联系人
        case 4:
        {
            string the_name;
            cout << "输入要查找的联系人：" << endl;
            cin >> the_name;
            findPerson(&abs, the_name);
        }
            break;


        case 5:
            modifyPerson(&abs);
            break;


        case 6:
            cleanPerson(&abs);
            break;


        case 0:
            cout << " "<< endl;
            system("pause");
            return 0;
            break;


        default:
            break;
        }
    }

    system("pause");
    return 0;
}