一个c++的例子-通讯录

参考B站黑马c++视频教程，这里推荐vscode一个extension，koroFileHeader

可以自动写头注释，非常方便

为啥用英语？因为code runner运行的时候中文输出到terminal为乱码，懒得搞

注意，在vsocode中在struct指针后输入.之后也会自动边为->，我一开始都手动输入的。

 

/*
 * @Author: your name
 * @Date: 2021-08-05 11:27:35
 * @LastEditTime: 2021-08-06 10:06:16
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \c++\tongxunlu\main.cpp
 */
#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_address;
};
struct AddressBook
{
    struct Person personArr[MAX];
    int m_size;
};

void showMenu()
{
    cout << "*************************" << endl;
    cout << "**** 1 Add *******" << endl;
    cout << "**** 2 Display *******" << endl;
    cout << "**** 3 Delete *******" << endl;
    cout << "**** 4 Find *******" << endl;
    cout << "**** 5 Modify *******" << endl;
    cout << "**** 6 Clear *******" << endl;
    cout << "**** 0 Quit *******" << endl;
    cout << "*************************" << endl;
}

void getOnePerson(AddressBook *book, int index)
{

    cout << "name: ";
    cin >> book->personArr[index].m_name;
    // cout << "your name is:  " << book->personArr[size].m_name << endl;

    int sex;
    while (true)
    {
        cout << "sex (1-male,2-female):";
        cin >> sex;
        if (sex == 1 || sex == 2)
        {
            book->personArr[index].m_sex = sex;
            break;
        }
    }

    int age;
    while (true)
    {
        cout << "age (from 0 to 150):";
        cin >> age;
        if (age >= 0 && age <= 150)
        {
            book->personArr[index].m_age = age;
            break;
        }
    }
}

void add(AddressBook *book)
{
    // string name;
    // int sex;
    // int age;
    // string phone;
    // string address;
    if (book->m_size == MAX)
    {
        cout << "full!" << endl;
        return;
    }
    else
    {
        int size = book->m_size;

        getOnePerson(book, size);

        book->m_size += 1;

        cout << "one person added!" << endl;
        system("pause");
        system("cls");
    }
}

void displayOnePerson(AddressBook *book, int index)
{
    string name = book->personArr[index].m_name;
    int sex = book->personArr[index].m_sex;
    int age = book->personArr[index].m_age;
    cout << name << "\t" << (sex == 1 ? "male" : "female") << "\t" << age << endl;
}

void display(AddressBook *book)
{
    int size = book->m_size;
    if (size == 0)
    {
        cout << "the book is empty!" << endl;
    }
    else
    {
        cout << "name\tsex\tage" << endl;
        for (int i = 0; i < size; i++)
        {
            displayOnePerson(book, i);
        }
    }
    system("pause");
    system("cls");
}

int isExist(AddressBook *book, string name)
{
    for (int i = 0; i < book->m_size; i++)
    {
        if (book->personArr[i].m_name == name)
        {
            return i;
        }
    }
    return -1;
}

void deletePerson(AddressBook *book)
{
    string name;
    cout << "the name to delete: ";
    cin >> name;

    int is_exist;
    is_exist = isExist(book, name);

    if (is_exist == -1)
    {

        cout << "not exist" << endl;
    }
    else
    {
        cout << "exist" << endl;
        cout << "deleted" << endl;
    }
}
void find(AddressBook *book)
{
    string name;
    cout << "the name to find: ";
    cin >> name;

    int is_exist;
    is_exist = isExist(book, name);
    int index;
    index = is_exist;

    if (is_exist != -1)
    {
        cout << "finded" << endl;
        cout << "name\tsex\tage" << endl;
        displayOnePerson(book, index);
    }
    else
    {
        cout << "not exist" << endl;
    }
}
void modify(AddressBook *book)
{
    string name;
    cout << "the name to modify: ";
    cin >> name;

    int is_exist;
    is_exist = isExist(book, name);
    int index;
    index = is_exist;

    if (is_exist != -1)
    {
        cout << "the person finded" << endl;
        getOnePerson(book, index);
        cout << "modified" << endl;
    }
    else
    {
        cout << "not exist" << endl;
    }
}
void clear(AddressBook *book)
{
    book->m_size = 0;
    cout << "cleared" << endl;
}

int main()
{

    AddressBook book;
    book.m_size = 0;

    int select = 0;

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

        switch (select)
        {
        case 1: //add
            add(&book);
            break;
        case 2: //display
            display(&book);
            break;
        case 3: //delete
            deletePerson(&book);
            break;
        case 4: //find
            find(&book);
            break;
        case 5: //modify
            modify(&book);
            break;
        case 6: //clear
            clear(&book);
            break;
        case 0: //quit
            cout << "quited" << endl;
            system("pause");
            return 0;
            break;
        default:
            break;
        }
    }
}