C++ 通讯录管理系统

#define MAX 100  // 通讯录最大人数
#include <iostream>
#include <stdlib.h>
#include <string>

using namespace std;

// 人物结构体
struct Person_info{
    string name;  // 姓名
    string sex;  // 性别
    int age;  // 年龄
    string tel;  // 电话
    string address;  // 住址
};

// 通讯录结构体
struct address_book{
    struct Person_info person_array[MAX];
    int len;  // 通讯录人数
};

// 显示主菜单
void show_menu(){
    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;
    //system("pause");
}

// 添加联系人
void add_person(struct address_book *list){
    if (list->len == MAX){
        cout << "通讯录最大人数已满" << endl;
    }
    else{
        string name;
        string sex;
        int age;
        string tel;
        string address;
        cout << "请输入姓名：" << endl;
        cin >> name;
        list->person_array[list->len].name = name;
        cout << "请输入性别：" << endl;
        cin >> sex;
        list->person_array[list->len].sex = sex;
        cout << "请输入年龄：" << endl;
        cin >> age;
        list->person_array[list->len].age = age;
        cout << "请输入电话：" << endl;
        cin >> tel;
        list->person_array[list->len].tel = tel;
        cout << "请输入住址：" << endl;
        cin >> address;
        list->person_array[list->len].address = address;
        cout << "添加成功！" << endl;
        list->len++;  // 更新人数
    }
    
}

// 显示联系人
void show_person(struct address_book *list){
    if (list->len == 0){
        cout << "通讯录为空！" << endl;
    }
    else{
        for (int i = 0; i < list->len; i++){
            cout << "姓名：" << list->person_array[i].name << "\t性别：" << list->person_array[i].sex << "\t年龄：" << list->person_array[i].age << "\t电话：" << list->person_array[i].tel << "\t住址：" << list->person_array[i].address << endl;
        }
    }
}

// 查找联系人
void select_person(struct address_book *list){
    string select_name;
    int flag = 0;  // 查找标记
    cout << "请输入要查找人员的姓名：" << endl;
    cin >> select_name;
    for (int i = 0; i < list->len; i++){
        if (list->person_array[i].name == select_name){
            flag = 1;
            cout << "姓名：" << list->person_array[i].name << "\t性别：" << list->person_array[i].sex << "\t年龄：" << list->person_array[i].age << "\t电话：" << list->person_array[i].tel << "\t住址：" << list->person_array[i].address << endl;
            break;
        }
    }

    if (flag == 0){
        cout << "通讯录中没有此人！" << endl;
    }
}

// 删除联系人
void delete_person(struct address_book *list){
    string delete_name;
    int flag = 0;  // 查找标记
    cout << "请输入要删除人员的姓名：" << endl;
    cin >> delete_name;
    for (int i = 0; i < list->len; i++){
        if (list->person_array[i].name == delete_name){
            flag = 1;
            for (int j = i; j < list->len; j++){
                list->person_array[j] = list->person_array[j + 1];
            }
            list->len--;
            cout << "删除成功！" << endl;
            break;
        }
    }

    if (flag == 0){
        cout << "通讯录中没有此人" << endl;
    }
}

// 修改联系人
void modify_person(struct address_book *list){
    string modify_name;
    int flag = 0;  // 查找标记
    cout << "请输入要修改人员的姓名：" << endl;
    cin >> modify_name;
    for (int i = 0; i < list->len; i++){
        if (list->person_array[i].name == modify_name){
            flag = 1;
            int ans = 0;  // 修改标记

            while(1){
                cout << "请输入要修改的信息（没有就按0）：" << endl;
                string cin_info;
                cin >> cin_info;

                if (cin_info == "姓名"){
                    cout << "请输入修改后的信息：" << endl;
                    string new_info;
                    cin >> new_info;
                    list->person_array[i].name = new_info;
                }
                else if (cin_info == "性别"){
                    cout << "请输入修改后的信息：" << endl;
                    string new_info;
                    cin >> new_info;
                    list->person_array[i].sex = new_info;
                }
                else if (cin_info == "年龄"){
                    cout << "请输入修改后的信息：" << endl;
                    int new_info;
                    cin >> new_info;
                    list->person_array[i].age = new_info;
                }
                else if (cin_info == "电话"){
                    cout << "请输入修改后的信息：" << endl;
                    string new_info;
                    cin >> new_info;
                    list->person_array[i].tel = new_info;
                }
                else if (cin_info == "住址"){
                    cout << "请输入修改后的信息：" << endl;
                    string new_info;
                    cin >> new_info;
                    list->person_array[i].address = new_info;
                }
                else if (cin_info == "0"){
                    break;
                }
            }
            cout << "修改成功！" << endl;
            break;
        }
    }

    if (flag == 0){
        cout << "通讯录中没有此人" << endl;
    }
}

// 清空联系人
void clear_person(struct address_book *list){
    cout << "确定要清空联系人吗？（1或0）" << endl;
    int number;
    cin >> number;

    if (number){
        list->len = 0;
        cout << "清空成功！" << endl;
    }
    else{
        cout << "取消成功！" << endl;
    } 
}

int main(){
    struct address_book list;
    list.len = 0;  // 初始人数

    while (1){
        show_menu();
        int select = 0; // 初始选择数字
        cout << "输入要执行的功能：" << endl;
        cin >> select;

        switch (select){
        case 1:
            add_person(&list);
            break;
        case 2:
            show_person(&list);
            break;
        case 3:
            delete_person(&list);
            break;
        case 4:
            select_person(&list);
            break;
        case 5:
            modify_person(&list);
            break;
        case 6:
            clear_person(&list);
            break;
        case 0:
            cout << "欢迎下次使用" << endl;
            break;
        }
    }
}