Introducción a C ++ C ++ Realización del sistema de gestión de la libreta de direcciones

1. Descripción de la tarea

　　Escriba un sistema de administración de la libreta de direcciones, de modo que el sistema tenga las funciones de agregar, eliminar, modificar y verificar.

2. Implementación de código C ++

#include<iostream>
#include<string>
#define MAX 10

using namespace std;

struct Person
{
    string m_name;
    int m_age;
    string m_phone;
    string m_address;
};


struct PersonInfo
{
    Person personArray[MAX];
    int size = 0;
};

void show_info()
{
    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;
}


void add_person(PersonInfo * abs)
{
    int index = abs->size;
    cout << "请输入姓名" << endl;
    string name;
    cin >> name;
    abs->personArray[index].m_name = name;

    cout << "请输入年龄" << endl;
    int age;
    cin >> age;
    abs->personArray[index].m_age = age;

    cout << "请输入电话" << endl;
    string phone;
    cin >> phone;
    abs->personArray[index].m_phone = phone;

    cout << "请输入地址" << endl;
    string address;
    cin >> address;
    abs->personArray[index].m_address = address;

    abs->size++;

    cout << "成功添加联系人" << endl;

}


void show_person(PersonInfo * abs)
{
    int size = abs->size;
    for(int i=0; i < size; i++)
    {
        cout << abs->personArray[i].m_name + "\t"
             << abs->personArray[i].m_age << "\t"
             << abs->personArray[i].m_phone + "\t"
             << abs->personArray[i].m_address + "\t"
             << endl;
    }
}


int is_exists(PersonInfo * abs, string name)
{
    int size = abs->size;
    for(int i=0; i<size; i++)
    {
        if(abs->personArray[i].m_name == name)
        {
            return i;
        }
    }
    return -1;
}


void del_person(PersonInfo * abs, int index)
{
    int size = abs->size;
    for(int i=index; i<size-1; i++)
    {
        abs->personArray[i] = abs->personArray[i+1];
    }
    abs->size--;
}


void show_person(PersonInfo * abs, int index)
{
    cout << abs->personArray[index].m_name + "\t"
         << abs->personArray[index].m_age << "\t"
         << abs->personArray[index].m_phone + "\t"
         << abs->personArray[index].m_address + "\t"
         << endl;
}


void modify_person(PersonInfo * abs, int index)
{
    cout << "请输入年龄" << endl;
    int age;
    cin >> age;
    abs->personArray[index].m_age = age;

    cout << "请输入电话" << endl;
    string phone;
    cin >> phone;
    abs->personArray[index].m_phone = phone;

    cout << "请输入地址" << endl;
    string address;
    cin >> address;
    abs->personArray[index].m_address = address;
}


void clear_person(PersonInfo * abs)
{
    abs->size = 0;
}

int main()
{
    PersonInfo abs;

    while(true)
    {
        show_info();
        cout << "请输入选项！";
        int num;
        cin >> num;
        if(num==1)
        {
            cout << "添加联系人" << endl;
            add_person(&abs);
        }
        else if(num==2)
        {
            cout << "显示联系人" << endl;
            show_person(&abs);
        }
        else if(num==3)
        {
            cout << "删除联系人" << endl;
            string name;
            cout << "请输入删除人的名字" << endl;
            cin >> name;
            int det = is_exists(&abs, name);
            if(det != -1)
            {
                del_person(&abs, det);
            }
            else
            {
                cout << "通讯录中没有找到此人" << endl;
            }
        }
        else if(num==4)
        {
            cout << "查找联系人" << endl;
            string name;
            cout << "请输入查找人的名字" << endl;
            cin >> name;
            int det = is_exists(&abs, name);
            if(det != -1)
            {
                show_person(&abs, det);
            }
            else
            {
                cout << "通讯录中没有找到此人" << endl;
            }

        }
        else if(num==5)
        {
            cout << "修改联系人" << endl;
            string name;
            cout << "请输入要修改人的名字" << endl;
            cin >> name;
            int det = is_exists(&abs, name);
            if(det == -1)
            {
                cout << "通讯录中没有找到此人" << endl;
            }
            else
            {
                modify_person(&abs, det);
            }
        }
        else if(num==6)
        {
            cout << "清空联系人" << endl;
            clear_person(&abs);
        }
        else if(num==0)
        {
            cout << "退出通讯录" << endl;
            break;
        }
        else
        {
            cout << "输入错误，请重新输入" << endl;
        }

    }
    return 0;
}

 

Grabación: para que los principiantes aprendan C ++.