通讯录练习

#include<iostream>
#include<Windows.h>
#include<string>

using namespace std;

#define MAX 1000

#pragma region 结构体



struct stcPersong
{
    int  id;
    string name;
    int sex;
    int age;
    string adress;
};

struct stcMenu
{
    stcPersong stcperson[MAX];//联系人结构体
    int m_size;//人数
};

#pragma endregion

#pragma region 函数

void showMenu()
{
    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.退出系统   ********** " << endl;
}

//限制输入数字
int numInput()
{
    char n;
    int num;
    //cout << "please enter a number:" << endl;
    cin >> n;
    num = n;
    while (1)  
    {
        if (int(num) >= 48 || int(num) <= 57|| int(num) ==46||int(num) == 8)
            break;
        else
        {
            cout << "你输入的不是一个数字!!" << endl;
        }
        cin >> n;
    }

    return n;
}
//仅输入数字
void onlyNumber()
{
    cout << "请输入:" << endl;
    string s;
    cin >> s;
    while (s.size() != 1 || s[0] <= '0' || s[0] >= '9') {
        cout << "输入错误，请重新输入:" << endl;
        cin >> s;
    }
    cout << "成功" << endl;
}

//添加联系人
void addPerson(stcMenu * stc)
{
    if (stc->m_size > MAX)
    {
        cout << "通讯录已满" << endl;
    }
    else
    {
        string nam;
        stc->stcperson[stc->m_size].id = stc->m_size;
        cout << "输入姓名" << endl;
        cin >> nam;
        stc->stcperson[stc->m_size].name = nam;

        cout << "输入性别" << endl;
        int se;
        cin >> se;
        stc->stcperson[stc->m_size].age = se;

        cout << "输入年龄" << endl;
        int ag = 0;
        ag = numInput();
        //cin >> ag;
        stc->stcperson[stc->m_size].age = ag;

        cout << "添加完成" << endl;
        stc->m_size++;
    }
    system("pause");
    system("cls");
    return;
}
//显示联系人
void showPerson(stcMenu * stc)
{
    if (stc->m_size == 0)
    {
        cout << "通讯录为空" << endl;
    }
    else
    {
        for (int i = 0; i < stc->m_size; i++)
        {
            cout << "序号  " << stc->stcperson[i].id << "      姓名 " << stc->stcperson[i].name <<
                "    性别  " << (stc->stcperson[i].sex == 1 ? "男" : "女") << "    年龄" << stc->stcperson[i].age << endl;
        }
    }
}
//检测联系人
int checkPerson(stcMenu * stc, string name)
{
    if (stc->m_size > 0)
    {
        for (size_t i = 0; i < stc->m_size; i++)
        {
            if (stc->stcperson[0].name == name)
            {
                return i;
            }
        }
        return -1;
    }
    else
    {
        cout << "通讯录为空！" << endl;
        return -1;
    }
}
//删除联系人
void deletePerson(stcMenu * stc)
{
    cout << "删除联系人\n";
    cout << "   输入姓名：\n";
    string m_name;
    cin >> m_name;
    int ret = checkPerson(stc, m_name);
    if (ret != -1)
    {
        for (size_t i = ret; i < stc->m_size - ret; i++)
        {
            stc->stcperson[i] = stc->stcperson[i + 1];
        }
        stc->m_size--;
    }
    else
    {
        cout << "查无此人！" << endl;
    }
    system("pause");
    system("cls");
    return;
}

//查找联系人
void findPerson(stcMenu * stc)
{
    cout << "查找联系人\n";
    cout << "     输入姓名：\n";
    string m_name;
    cin >> m_name;
    int ret = checkPerson(stc, m_name);
    if (ret != -1)
    {
        cout << "序号：" << stc->stcperson[ret].id << "  姓名：" << stc->stcperson[ret].name << "   年龄：" << stc->stcperson[ret].age << endl;;
    }
    else
    {
        cout << "查无此人！" << endl;
    }
    system("pause");
    system("cls");
    return;
}
//修改联系人
void alterPerson(stcMenu * stc)
{
    cout << "修改联系人\n";
    cout << " ---- 输入姓名：\n";
    string m_name;
    cin >> m_name;
    int ret = checkPerson(stc, m_name);
    if (ret != -1)
    {
        cout << "输入新年龄：\n";
        int m_age;
        cin >> m_age;
        stc->stcperson[ret].age = m_age;
        cout << "修改完成\n";
    }
    else
    {
        cout << "查无此人！" << endl;
    }
    system("pause");
    system("cls");
    return;
}
//清空联系人
void clearPerson(stcMenu * stc)
{
    again:
    int select;
    cout << "清空联系人\n，确定--1，取消--2"<<endl;
    //cin >> select;
    select = numInput();
    if (select == 1)
    {
        cout << "已经清空联系人\n";
        stc->m_size = 0;
    }
    else if (select == 2)
    {
        cout << "已经取消清空联系人\n";
    }
    else
    {
        cout << "请输入正确选项\n";
        goto again;
    }
    system("pause");
    system("cls");
    return;
}


#pragma endregion


int main()
{
    int select;

    stcMenu stcp;
    stcp.m_size = 0;
    while (true)
    {
        showMenu();
        cin >> select;

        switch (select)
        {
        case 1://1.添加联系
            addPerson(&stcp);
            break;
        case 2://2.显示联系人 
            showPerson(&stcp);
            break;
        case 3:// 3.删除联系人
            deletePerson(&stcp);
            break;
        case 4://4.查找联系人
            findPerson(&stcp);
            break;
        case 5://5.修改联系人
            alterPerson(&stcp);
            break;
        case 6://6.清空联系人
            clearPerson(&stcp);
            break;
        case 0://0.退出系统  
            cout << "欢迎下次使用" << endl;
            system("pause");
            return 0;
            break;
        }

    }

    return 0;
}