相关视频——黑马程序员C++(264-281)

(1-83笔记)——链接

(84-146笔记)——链接

(146-166笔记)——链接

(167-263笔记)——链接

演讲比赛流程管理系统

演讲比赛程序需求

程序功能

代码实现

Speaker.h

#pragma once
#include<iostream>
using namespace std;
class Speaker
{
public:
    string m_Name;
    double m_Score[2];//两轮得分
};

SpeechManager.h

#pragma once
#include<iostream>
#include<vector>
#include<map>
#include"Speaker.h"
#include<algorithm>
#include<deque>
#include<functional>
#include<numeric>
#include<string>
#include<fstream>
using namespace std;

//设计演讲管理类
class SpeechManager
{
public:
    SpeechManager();

    void Show_Menu();//菜单

    void ExitSystem();

    void InitSpeech();//初始化

    void CreatSpeaker();//创建选手

    void StartSpeech();//开始比赛

    void SpeechDraw();//抽签

    void SpeechContest();//比赛

    void ShowScore();//显示得分

    void SaveRecord();//保存文件

    void LoadRecord();//读取文件

    void ShowRecord();//显示往届数据

    bool FileIsEmpyt;//文件是否为空

    map<int, vector<string>>m_Record;//存放往届记录的容器
    ~SpeechManager();

    void ClearRecord();//清空记录

    //第一轮比赛选手
    vector<int>v1;
    //第一轮晋级选手
    vector<int>v2;
    //胜出前三名选手编号容器
    vector<int>vVictory;
    //存放编号以及对应具体选手容器
    map<int, Speaker>m_Speaker;

    //存放比赛轮数
    int m_Index;

};

SpeechManager.cpp

#include"SpeechManager.h"

SpeechManager::SpeechManager()
{
    //初始化容器和属性
    this->InitSpeech();
    //创建选手12
    this->CreatSpeaker();
    //加载往届记录
    this->LoadRecord();

}

//菜单
void SpeechManager::Show_Menu()
{
    cout << "*********************" << endl;
    cout << "****欢迎参加演讲比赛" << endl;
    cout << "*****1.开始比赛*****" << endl;
    cout << "*****2.查看记录*****" << endl;
    cout << "*****3.清空记录*****" << endl;
    cout << "*****0.退出程序*****" << endl;
    cout << "*********************" << endl;
}

//退出
void SpeechManager::ExitSystem()
{
    cout << "欢迎下次使用" << endl;
    exit(0);
}
//初始化
void SpeechManager::InitSpeech()
{
    //容器置空
    this->v1.clear();
    this->v2.clear();
    this->vVictory.clear();
    this->m_Speaker.clear();
    //初始化比赛轮数
    this->m_Index = 1;

    //将记录的容器清空
    this->m_Record.clear();

}
//创建选手
void SpeechManager::CreatSpeaker()
{
    string NameSeed = "ABCDEFGHIJKL";
    for (unsigned int i = 0; i < NameSeed.size(); i++)
    {
        string name = "选手";
        name += NameSeed[i];
        //创建具体选手
        Speaker sp;
        sp.m_Name = name;
        for (int j = 0; j < 2; j++)
        {
            sp.m_Score[j] = 0;
        }
        //创建选手编号，并且放入到v1容器中
        this->v1.push_back(i + 10001);

        //选手编号以及对应选手放入map容器中
        this->m_Speaker.insert(make_pair(i + 10001, sp));
    }
}

//抽签
void SpeechManager::SpeechDraw()
{
    cout << "第" << this->m_Index << "轮比赛选手正在抽签" << endl;
    cout << "——————" << endl;
    if (this->m_Index == 1)
    {
        //第一轮
        random_shuffle(v1.begin(), v1.end());
        for (vector<int>::iterator it = v1.begin(); it != v1.end(); it++)
        {
            cout << *it << " ";
        }
        cout << endl;
    }
    else
    {
        //第二轮
        random_shuffle(v2.begin(), v2.end());
        for (vector<int>::iterator it = v2.begin(); it != v2.end(); it++)
        {
            cout << *it << " ";
        }
        cout << endl;
    }
}

//开始比赛
void SpeechManager::StartSpeech()
{
    //第一轮开始比赛

    //1.抽签
    this->SpeechDraw();
    //2.比赛
    this->SpeechContest();
    //3.显示晋级结果
    this->ShowScore();
    //第二轮比赛开始
    this->m_Index++;
    //抽签
    this->SpeechDraw();
    //比赛
    this->SpeechContest();
    //显示晋级结果
    this->ShowScore();
    //保存分数到文件中
    this->SaveRecord();

    //重置比赛
    //初始化属性
    this->InitSpeech();
    //创建选手
    this->CreatSpeaker();
    //获取往届记录
    this->LoadRecord();
    cout << "本届比赛已经结束！" << endl;

    system("pause");
    system("cls");

}

void SpeechManager::SpeechContest()
{
    cout << "第" << this->m_Index << "轮比赛正式开始" << endl;
    //准备临时容器存放小组成绩
    multimap<double, int, greater<double>>groupScore;

    int num = 0;//统计6个人为一组

    vector<int>v_Src;//比赛选手容器
    if (this->m_Index == 1)
    {
        v_Src = v1;
    }
    else
    {
        v_Src = v2;
    }

    //遍历所有选手进行比赛
    for (vector<int>::iterator it = v_Src.begin(); it != v_Src.end(); it++)
    {
        num++;
        //评委打分
        deque<double>d;
        for (int i = 0; i < 10; i++)
        {
            double score = (rand() % 401 + 600) / 10.f;
            //cout << score << " ";
            d.push_back(score);
        }
        //cout << endl;
        sort(d.begin(), d.end(), greater<double>());//排序
        //去除最高分和最低分
        d.pop_front();
        d.pop_back();

        double sum = accumulate(d.begin(), d.end(), 0.0f);//总分
        double avg = sum / (double)d.size();//平均分

        //将平均分放到map容器中
        this->m_Speaker[*it].m_Score[this->m_Index - 1] = avg;

        //打印平均分
        //cout << "编号" << " " << *it << "姓名" << " " << this->m_Speaker[*it].m_Name << " " << "平均分" << " " << avg << endl;

        //将打分数据 放入到临时小组中
        groupScore.insert(make_pair(avg, *it));//key是得分 value是具体选手编号
        //每6人取出前三名
        if (num % 6 == 0)
        {
            cout << "第" << num /6<< "小组比赛名次" << endl;
            for (multimap<double, int, greater<double>>::iterator it = groupScore.begin(); it != groupScore.end(); it++)
            {
                cout << "编号: " << it->second << "姓名: " << this->m_Speaker[it->second].m_Name << "成绩: " << this->m_Speaker[it->second].m_Score[this->m_Index-1] << endl;
            }
            //取走前三名
            int count = 0;
            for (multimap<double, int, greater<double>>::iterator it = groupScore.begin(); it != groupScore.end() && count < 3; it++, count++)
            {
                if (this->m_Index == 1)
                {
                    v2.push_back((*it).second);
                }
                else
                {
                    vVictory.push_back((*it).second);
                }
            }
            groupScore.clear();//小组容器清空
        }
    }
    cout << "第" << this->m_Index << "轮比赛完毕" << endl;
    system("pause");
}

//显示得分
void SpeechManager::ShowScore()
{
    cout << "第" << this->m_Index << "轮晋级选手如下" << endl;
    vector<int>v;
    if (this->m_Index == 1)
    {
        v = v2;
    }
    else
    {
        v = vVictory;
    }

    for (vector<int>::iterator it = v.begin(); it != v.end();it++)
    {
        cout << "选手编号: " << *it << "姓名: " << this->m_Speaker[*it].m_Name << "得分: " << this->m_Speaker[*it].m_Score[this->m_Index - 1] << endl;
    }
    system("pause");
    system("cls");
    this->Show_Menu();
}

//保存文件
void SpeechManager::SaveRecord()
{
    ofstream ofs;
    ofs.open("speech.csv", ios::out | ios::app);
    //将每个选手的数据写入到文件中
    for (vector<int>::iterator it = vVictory.begin(); it != vVictory.end(); it++)
    {
        ofs << *it << "," << this->m_Speaker[*it].m_Score[1] << ",";
    }
    ofs << endl;

    ofs.close();
    cout << "记录已经完成" << endl;

    //更改文件不为空状态
    this->FileIsEmpyt = false;
}

//读取文件
void SpeechManager::LoadRecord()
{
    ifstream ifs("speech.csv", ios::in);
    if (!ifs.is_open())
    {
        this->FileIsEmpyt = true;

        ifs.close();
        return;
    }

    //文件清空情况
    char ch;
    ifs >> ch;
    if (ifs.eof())
    {
        cout << "文件为空" << endl;
        this->FileIsEmpyt = true;
        ifs.close();
        return;
    }

    //文件不为空情况
    this->FileIsEmpyt = false;
    ifs.putback(ch);
    string data;
    int index = 0;
    while (ifs >> data)
    {
        vector<string>v;//存放冠军数据
        //cout << data << endl;
        int pos = -1;
        int start  = 0;
        while (1)
        {
            pos = data.find(",", start);
            if (pos == -1)
            {
                //没找到
                break;
            }
            string temp = data.substr(start, pos - start);
            //cout << temp << endl;
            v.push_back(temp);
            start = pos + 1;
        }
        this->m_Record.insert(make_pair(index, v));
        index++;
    }
    ifs.close();

    /*for (map<int, vector<string>>::iterator it = m_Record.begin(); it != m_Record.end(); it++)
    {
        cout <<"第"<<it->first << "届冠军编号：" << it->second[0] << "分数：" << it->second[1] << endl;
    }*/
}
//显示往届记录
void SpeechManager::ShowRecord()
{
    if (this->FileIsEmpyt)
    {
        cout << "文件为或者文件不存在" << endl;
    }
    for (int i = 0; i < this->m_Record.size(); i++)
    {
        cout << "第" << i + 1 << "届 "
            << "冠军编号: " << this->m_Record[i][0] << "得分: " << this->m_Record[i][1] << " "
            << "亚军编号: " << this->m_Record[i][2] << "得分: " << this->m_Record[i][3] << " "
            << "季军编号: " << this->m_Record[i][4] << "得分: " << this->m_Record[i][5] << endl;
    }

    system("pause");
    system("cls");
}

//清空记录
void SpeechManager::ClearRecord()
{
    cout << "是否确定清空文件?" << endl;
    cout << "1.是、2.否" << endl;

    int select = 0;
    cin >> select;
    if (select == 1)
    {
        ofstream ofs("speech.csv",ios::trunc);
        ofs.close();

        //初始化容器和属性
        this->InitSpeech();
        //创建选手12
        this->CreatSpeaker();
        //加载往届记录
        this->LoadRecord();

        cout << "清空成功!" << endl;
    }
    system("pause");
    system("cls");
}

SpeechManager::~SpeechManager()
{

}

演讲比赛流程管理系统.cpp

#include<iostream>
#include<string>
#include<ctime>
#include"SpeechManager.h"
using namespace std;
int main(void)
{

    //随机数种子
    srand((unsigned int)time(NULL));

    //创建管理类
    SpeechManager sm;

    /*for (map<int, Speaker>::iterator it = sm.m_Speaker.begin(); it != sm.m_Speaker.end(); it++)
    {
        cout << it->first << " " << it->second.m_Name<<" "<<it->second.m_Score[0]<<endl;
    }*/

    int choice = 0;//用于存储用户输入

    while (1)
    {
        sm.Show_Menu();
        cin >> choice;
        switch (choice)
        {
        case 1://开始比赛
            sm.StartSpeech();
            break;
        case 2://查看往届比赛
            sm.ShowRecord();
            break;
        case 3://清空
            sm.ClearRecord();
            break;
        case 0://退出
            sm.ExitSystem();
            break;

        default:
            system("cls");
            break;
        }
    }

    system("pause");
    return 0;
}