实现：通讯录管理系统

#include<iostream>
#include<string>
#define MAX 1000

using namespace std;

//定义通信结构体
struct Person
{
    string Name; //姓名
    int Sex; //性别：1男 2女
    int Age; //年龄
    string Phone; //电话
    string Address; //住址
};

struct Addressbook
{
    int size; //记录通信条数
    struct Person p[MAX]; // 来储存Person的结构体
};

void add_person(struct Addressbook * abs)
{
    //姓名
    string name;
    cout << "输入你要储存的姓名" << endl;
    cin >> name;
    abs->p[abs->size].Name = name;

    //性别
    int sex;
    cout << "输入该人的性别" << endl;
    cin >> sex;
    abs->p[abs->size].Sex = sex;

    //年龄
    int age;
    cout << "输入该人的年龄" << endl;
    cin >> age;
    abs->p[abs->size].Age = age;

    //电话
    string phone;
    cout << "输入该人的电话" << endl;
    cin >> phone;
    abs->p[abs->size].Phone = phone;

    //地址
    string address;
    cout << "输入该人的地址" << endl;
    cin >> address;
    abs->p[abs->size].Address = address;

    // 计数器自增
    abs->size++;

    cout << "添加成功" << endl;
    system("pause");
    system("cls");
}

void display_person(struct Addressbook * abs)
{
    if (abs->size == 0)
    {
        cout << "结构体数据为空" << endl;
    }
    else
    {
        for (int i = 0; i < abs->size; i++)
        {
            cout << "姓名为：" << abs->p[i].Name << "	性别：" << abs->p[i].Sex << "	年龄：" << abs->p[i].Age << "	电话：" << abs->p[i].Phone << "	地址为：" << abs->p[i].Address << endl;
        }
    }
    system("pause");
    system("cls");
}

int isExist(struct Addressbook * abs,string name)   //封装一个函数 用来判断是否存在 因为多个函数都需要用到
{
    for(int i=0; i < abs->size; i++)
    {
        if(abs->p->Name == name)
        {
            return i;
        }
    }
    return -1;

}

void del_person(struct Addressbook * abs, string name)
{
    int res = isExist(abs, name);
    if(res != -1)
    {
        for(int i=res; i<abs->size; i++)
        {
            abs->p[i] = abs->p[i+1];
        }
        abs->size--;
        cout << "删除成功!" << endl;
    }
    else
    {
        cout << "查无此人" << endl;
    }

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

void find_person(struct Addressbook * abs, string name)
{
    int res = isExist(abs, name);
    if(res != -1)
    {
        for(int i=0; i<abs->size; i++)
        {
            if(abs->p[i].Name == name)
            {
                cout <<"姓名为:"<< abs->p[i].Name << "	性别：" << abs->p[i].Sex << "	年龄：" << abs->p[i].Age << "	电话：" << abs->p[i].Phone << "	地址为：" << abs->p[i].Address << endl;
            }
        }
    }
    else
    {
        cout << "查无此人" << endl;
    }
}

void edit_person(struct Addressbook * abs, string name)
{
    int res = isExist(abs, name);
    string re_Name; //姓名
    int re_Sex; //性别：1男 2女
    int re_Age; //年龄
    string re_Phone; //电话
    string re_Address; //住址
    if(res != -1)
    {
        for(int i=0; i<abs->size; i++)
        {
            cout <<"重新修改的姓名为:"<< endl;
            cin >> re_Name;
            abs->p[i].Name = re_Name;

            cout <<"重新修改的性别为:"<< endl;
            cin >> re_Sex;
            abs->p[i].Sex = re_Sex;

            cout <<"重新修改的年龄为:"<< endl;
            cin >> re_Age;
            abs->p[i].Age = re_Age;

            cout <<"重新修改的电话为："<< endl;
            cin >> re_Phone;
            abs->p[i].Phone = re_Phone;

            cout <<"重新修改的住址为:"<< endl;
            cin >> re_Address;
            abs->p[i].Address = re_Address;

            cout << "修改成功" << endl;
            system("pause");
            system("cls");
        }
    }
    else
    {
        cout << "查无此人" << endl;
    }
}

void clear_person(struct Addressbook * abs){
    abs->size = 0;
    cout << "清空完成" << endl;
    system("pause");
    system("cls");
}

//入口
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()
{
    struct Addressbook abs; //定义一个Addressbook的结构体
    abs.size = 0; //初始化num的值
    int choose = 0; //初始化choose的值
    while (true)
    {
        showMenu();
        cout << "输入你想进行操作的序号：";
        cin >> choose;
        switch (choose)
        {
        case 1:
            //添加联系人
            add_person(&abs); //这里为什么要传地址呢，因为我们输入的数据都要保存，而不是函数中允许完就消失
            //cout << abs.p[abs.size-1].Name; // 这个用来调试下，输出上一个size的记录数
            break;
        case 2:
            //显示联系人
            display_person(&abs); //这里可以传地址也可以传值，因为只需要输出就够了，但是还需要知道当前的结构体中的数量len，用于循环次数
            break;
        case 3:
            //删除联系人
        {
            string name;
            cin >> name;
            del_person(&abs,name);
        }
        break;
        case 4:
        {
            string name;
            cin >> name;
            find_person(&abs, name);
        }
            break;
        case 5:
            //修改联系人
        {
            string name;
            cin >> name;
            edit_person(&abs, name);
        }
            break;
        case 6:
            //清空联系人
            {
                int flag = 0;
                cout << "是否确认要清空联系人表?(输入1为true 2为false)" << endl;
                cin >> flag;
                if(flag == 1){
                    clear_person(&abs);
                }
            }
            break;
        case 0:
            //退出通讯录
            cout << "欢迎下次使用!" << endl;
            system("pause");
            return 0;
        }
    }
}