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c++基礎學習之通訊錄管理系統

前言

雖然釋出這麼簡單的邏輯代碼有點羞恥，但是千裡之行，始于足下。記錄吾c++學習過程。

通信錄管理系統

就是簡單的對數組的添加，修改，删除等操作來模拟通訊錄管理系統。根據使用者輸入1、2、3、4、5、6、0進行互動。

主程式

執行檔案

#include <iostream>
#include <string>
#include "mail_list.h"
using namespace std;

int main() {
    /*
     1 添加聯系人
     2 顯示聯系人
     3 删除聯系人
     4 查找聯系人
     5 修改聯系人
     6 清空聯系人
     0 退出通訊錄
     */
    show_menu();

    bool flag = true;

    struct Mail_list mailList;
    while (flag){
        int select = 0;
        cout << "請輸入你的選擇！" << endl;
        cin >> select;
        switch (select) {
            case 1:{
                add_person(&mailList);
                break;
            }
            case 2:{
                show_mail_list(mailList);
                break;
            }
            case 3:{
                cout << "請輸入你要删除的聯系人姓名:" << endl;
                string name;
                cin >> name;
                del_person(mailList, name);
                break;
            }
            case 4:{
                cout << "請輸入你要查找的人姓名:" << endl;
                string name;
                cin >> name;
                find_person(mailList, name, true);
                break;
            }
            case 5:{
                cout << "請輸入要修改的聯系人姓名：" << endl;
                string name;
                cin >> name;
                modify_person(mailList, name);
                break;
            }
            case 6:{
                clear_person(mailList);
                break;
            }
            case 0:{
                flag=false;
                cout << "退出" << endl;
                break;
            }
            default:{
                flag= false;
                cout << "please input right select value!, value range is 0~6" << endl;
                break;
            }
        }
    }

    return 0;
}

頭檔案

定義函數聲明、類和結構體。

#include <iostream>
#include <string>
using namespace std;
#define MAX 100

struct Person{
    string name;
    string sex;
    int age;
    int telephone_number;
    string address;
};
struct Mail_list{
    struct Person person_array[MAX];
    int m_size=0;
};
void show_menu();
void add_person(Mail_list * mailList);
void show_mail_list(Mail_list mailList);
int find_person(Mail_list mailList, string name, bool show= false);
void del_person(Mail_list & mailList, string name);
void modify_person(Mail_list & mailList, string name);
void clear_person(Mail_list & mailList);

源檔案

具體的函數實作

//
// Created by 安超 on 2021/8/12.
//
#include "mail_list.h"
#include <iostream>
#include <string>
using namespace std;
#define MAX 100

void show_menu(){
    cout << "1 添加聯系人" << endl;
    cout << "2 顯示聯系人" << endl;
    cout << "3 删除聯系人" << endl;
    cout << "4 查找聯系人" << endl;
    cout << "5 修改聯系人" << endl;
    cout << "6 清空聯系人" << endl;
    cout << "0 退出通訊錄" << endl;
}

void add_person(Mail_list * mailList){
    if (mailList->m_size == MAX){
        cout << "通訊錄已滿，無法添加！" << endl;
        return;
    }
    else{
        string name;
        string sex;
        int age;
        int telephone_number;
        string address;
        cout << "請輸入姓名：" << endl;
        cin >> name;
        cout << "請輸入性别：" << endl;
        cin >> sex;
        cout << "請輸入年齡：" << endl;
        cin >> age;
        cout << "請輸入電話号碼：" << endl;
        cin >> telephone_number;
        cout << "請輸入位址：" << endl;
        cin >> address;
        mailList->person_array[mailList->m_size].name=name;
        mailList->person_array[mailList->m_size].sex=sex;
        mailList->person_array[mailList->m_size].age=age;
        mailList->person_array[mailList->m_size].telephone_number=telephone_number;
        mailList->person_array[mailList->m_size].address=address;
        mailList->m_size++;
        cout << name <<"添加成功！" << endl;
    }
}

void show_mail_list(Mail_list mailList){
    if(mailList.m_size == 0){
        cout << "通信錄為空！" << endl;
    }
    else{
        for(int i=0; i<mailList.m_size; i++){
            cout << "**************************************" << endl;
            cout << "姓名：" << mailList.person_array[i].name << endl;
            cout << "性别：" << mailList.person_array[i].sex << endl;
            cout << "年齡：" << mailList.person_array[i].age << endl;
            cout << "電話号碼：" << mailList.person_array[i].telephone_number << endl;
            cout << "位址：" << mailList.person_array[i].address << endl;
            cout << "**************************************" << endl;
        }
    }
}

int find_person(Mail_list mailList, string name, bool show){
    if(mailList.m_size==0){
        cout << "通信錄為空，您要找的人不存在!"<< endl;
        return -1;
    }
    else{
        for(int i=0; i<mailList.m_size; i++){
            if(name==mailList.person_array[i].name){
                cout << "查有此人!" << endl;
                if(show){
                    cout << "查詢到的資訊：" << endl;
                    cout << "**************************************" << endl;
                    cout << "姓名："<< mailList.person_array[i].name << endl;
                    cout << "性别："<< mailList.person_array[i].sex << endl;
                    cout << "年齡："<< mailList.person_array[i].age << endl;
                    cout << "電話号碼："<< mailList.person_array[i].telephone_number << endl;
                    cout << "位址："<< mailList.person_array[i].address << endl;
                    cout << "**************************************" << endl;
                }
                return i;
            }
        }
    }
    cout << "查無此人!" << endl;
    return -1;
}

void del_person(Mail_list & mailList, string name){
    int index = find_person(mailList, name);
    if(index != -1){
        for(int i=index; i<mailList.m_size; i++){
            mailList.person_array[index] = mailList.person_array[index+1];
        }
        cout << "删除成功!" << endl;
        mailList.m_size--;
    }
}

void modify_person(Mail_list & mailList, string name){
    int index = find_person(mailList, name);
    if(index != -1){
        cout << "請輸入修改後的姓名：" << endl;
        string new_name;
        cin >> new_name;
        mailList.person_array[index].name = new_name;
        cout << "請輸入修改後的性别：" << endl;
        string new_sex;
        cin >> new_sex;
        mailList.person_array[index].sex = new_sex;
        cout << "請輸入修改後的年齡：" << endl;
        int new_age;
        cin >> new_age;
        mailList.person_array[index].age = new_age;
        cout << "請輸入修改後的電話号：" << endl;
        int new_tel;
        cin >> new_tel;
        mailList.person_array[index].telephone_number= new_tel;
        cout << "請輸入修改後的住址：" << endl;
        string new_address;
        cin >> new_address;
        mailList.person_array[index].address= new_address;
    }
}

void clear_person(Mail_list & mailList){
    mailList.m_size=0;
    cout << "通訊錄已清空！"<< endl;
}

總結

寫這些邏輯雖然不費腦子，但是費體力，是以必須記錄，為了能學好c++，keep going！

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