• 演讲比赛流程管理系统(看看你的星座会赢吗)

    演讲比赛流程管理系统

    一、项目要求

    • 这是一场有12人参加的演讲比赛，分两轮，一轮淘汰赛，一轮决赛。
    • 每名选手都有对应编号，如10001~10012
    • 比赛方式：分六人一组比赛
    • 第一轮分两组，抽签决定演讲顺序
    • 十人打分，去除一个最高分和一个最低分，求得平均分作为选手成绩
    • 每组取前三晋级，进入第二轮
    • 第二轮前三名胜出
    • 每轮比赛都要显示晋级选手信息

    二、构建演讲比赛管理类

    #pragma once
#include
#include
#include
#include
#include
#include
#include//accumulate
#include
#include
#include//设置打印精度
#include//内建函数对象
#include"Speaker.h"
#define FILENAME "speech.csv"
using namespace std;
class SpeechContestManager
{
public:
	vector<int>v1;
	vector<int>v2;
	vector<int>v_victory;
	map<int, Speaker>m_speaker;
	map<int, vector<string>>m_record;
	int m_round;
	bool emptyfile;
	SpeechContestManager();
	void Menu();//菜单
	void Exit();//退出
	void InitSpeech();//初始化演讲
	void CreatSpeaker();//设置比赛人的信息
	void StartSpeech();//开始演讲比赛
	void SpeechLot();//比赛抽签
	void SpeechConst();//进行比赛
	void ShowScore();//展示分数
	void SaveRecord();//保存记录
	void LoadRecord();//载入记录
	void ShowRecord();//展示记录
	void ClearRecord();//清空记录
	~SpeechContestManager();
};

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    为了便于理解，使用v1,v2分别存储两轮的选手，
    v_victory存储赢得比赛的编号
    这里还需创建一个演讲者类

    #pragma once
#include
#include
using namespace std;

class Speaker
{
public:
	string m_name;
	double m_score[2];
};

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    存储姓名和两轮的比赛成绩
    用map容器的对组存储编号和Speaker类的属性，用于存储选手信息
    第二个map则是用于存储获奖者信息，读文件，展示文件的载体
    m_round表示轮数
    bool emptyfile表明文件状态
    是调用展示记录函数时的判断依据

    三、菜单

    void SpeechContestManager::Menu()
{
	cout << "********************************************" << endl;
	cout << "*********     欢迎参加演讲比赛     *********" << endl;
	cout << "*********      1.开始演讲比赛      *********" << endl;
	cout << "*********      2.查看往期记录      *********" << endl;
	cout << "*********      3.清空比赛记录      *********" << endl;
	cout << "*********      0.退出比赛程序      *********" << endl;
	cout << "********************************************" << endl;
	cout << endl;
}


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    提示用户进行输入

    四、设置main函数执行流程

    #include"SpeechcontestManager.h"
int main()
{
	srand((unsigned int)time(NULL));
	SpeechContestManager scm;
	scm.InitSpeech();
	scm.CreatSpeaker();
	scm.LoadRecord();
	int choice;
	do {
		scm.Menu();
		cout << "请选择:" << endl;
		cin >> choice;
		switch (choice)
		{
		case 1:
			scm.StartSpeech();
			break;
		case 2:
			scm.ShowRecord();
			break;
		case 3:
			scm.ClearRecord();
			break;
		case 0:
			scm.Exit();
		default:
			system("cls");
		}
	} while (choice);
	return 0;
}

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    要设置时间戳，在抽签和生成成绩时需要用到
    实例化管理对象，先进行初始化，选手设置，载入记录。
    调用菜单，根据用户输入调用不同功能函数，选择错误进行清屏即可

    五、函数实现

    一、构造函数

    SpeechContestManager::SpeechContestManager()
{
	this->InitSpeech();
}

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    调用InitSpeech初始化，其实没必要，main函数里又手动调用了一遍

    二、退出函数

    void SpeechContestManager::Exit()
{
	cout << "欢迎下次使用!" << endl;
	system("pause");
	exit(0);
}

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    exit的功 能: 关闭所有文件，终止正在执行的进程。
    exit(1)表示异常退出.这个1是返回给操作系统的。
    exit(x)（x不为0）都表示异常退出
    exit(0)表示正常退出
    exit()的参数会被传递给一些操作系统，包括UNIX,Linux,和MS DOS，以供其他程序使用。

    三、InitSpeech

    void SpeechContestManager::InitSpeech()
{
	this->v1.clear();
	this->v2.clear();
	this->v_victory.clear();
	this->m_speaker.clear();
	this->m_record.clear();
	this->m_round =1;
}

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    就是对类内成员变量进行初始化操作
    轮数置为1

    四、CreatSpeaker

    void SpeechContestManager::CreatSpeaker()
{
	string nameSeed[12] = { { "白羊" },{"金牛"},{"双子"},{"巨蟹"},{"狮子"},{"处女"}
		,{"天秤"},{"天蝎"},{"射手"},{"摩羯"},{"水瓶"},{"双鱼"} };
	for (int i = 0; i < 12; i++)
	{
		Speaker sp;
		sp.m_name = nameSeed[i];
		for (int j = 0; j < 2; j++)
			sp.m_score[j] = 0;
		this->v1.push_back(i + 1001);
		this->m_speaker.insert(make_pair(i + 1001, sp));
	}
}

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    这里我采用12星座作为选手名，给定编号，这里是顺序的，等下会打乱
    使用make_pair插入map的对组元素

    五、StartSpeech

    void SpeechContestManager::StartSpeech()
{
	this->SpeechLot();//抽签
	this->SpeechContest();//比赛
	this->ShowScore();//展示成绩
	this->m_round++;//进入下一轮
	this->SpeechLot();//抽签
	this->SpeechContest();//比赛
	this->ShowScore();//展示成绩
	this->SaveRecord();//保存三甲
	this->InitSpeech();//初始化，为下一届做准备
	this->CreatSpeaker();
	this->LoadRecord();//载入保存记录
	cout << "本届比赛结束!" << endl;
	system("pause");
	system("cls");
}

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    这里是比赛流程函数的调用

    六、SpeechLot

    void SpeechContestManager::SpeechLot()
{
	cout << "第 << " << this->m_round << " >> 轮比赛选手正在抽签" << endl;
	cout << "----------------------------" << endl;
	cout << "抽签后演讲顺序如下" << endl;
	if (this->m_round == 1)
	{
		random_shuffle(v1.begin(), v1.end());
		for (auto it : this->v1)
			cout << it << " ";
		cout << endl;
	}
	else
	{
		random_shuffle(v2.begin(), v2.end());
		for (auto it : this->v2)
			cout << it << " ";
		cout << endl;
	}
	cout << "----------------------------" << endl;
	system("pause");
	cout << endl;
}

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    利用random_shuffle随机打乱容器数据顺序，里面存的是选手编号

    七、SpeechContest

    void SpeechContestManager::SpeechContest()
{
	cout << "::::::::::第" << this->m_round << "轮比赛正式开始:" << "::::::::::"  << endl;
	multimap<double, int, greater<double>>groupScore;//设置组容器,用内置函数对象进行降序排序，用于取前三
	int num = 0;
	vector<int>vc;
	if (this->m_round == 1)//第一轮
		vc = v1;//将v1的随机编号利用重载=赋给vc
	else//反之
		vc = v2;
	for (auto it : vc)
	{
		num++;
		deque<double>d;//利用deque容器存分数
		for (int i = 0; i < 10; i++)
		{
			double score = (rand() % 400 + 601) / 10.f;//设置随机分数
			d.push_back(score);
		}
		sort(d.begin(), d.end());//进行有序排序
		d.pop_back();//去掉最高分
		d.pop_front();//去掉最低分
		double sum = accumulate(d.begin(), d.end(), 0.0f);//累加函数
		double avg= sum / (double)d.size();
		this->m_speaker[it].m_score[this->m_round - 1] = avg;//将品均分存入参赛人员信息中
		groupScore.insert(make_pair(avg, it));//插入数据
		if (num % 6 == 0)//满六人后展示六人成绩
		{
			cout << "第" << num / 6 << "小组比赛名次:" << endl;
			for (auto it : groupScore)
				cout << "编号:" << it.second << "\t姓名:" << this->m_speaker[it.second].m_name << "\t成绩" <<fixed<<setprecision(2)<< this->m_speaker[it.second].m_score[this->m_round - 1] << endl;
			int count = 0;
			for (multimap<double, int, greater<double>>::iterator it = groupScore.begin(); it != groupScore.end() && count < 3; it++, count++)
			{
				if (this->m_round == 1)//为第一轮
					v2.push_back(it->second);//存入第二轮
				else
					v_victory.push_back(it->second);//为第二轮，存入胜利者中
			}//这里是将前三的人相应容器中
			groupScore.clear();清空
			cout << endl;
		}
	}
	cout << "::::::::::第" << this->m_round << "轮比赛结束:" << ":::::::::::" << endl;
	system("pause");
}


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    进行比赛要分第一轮和第二轮进行不同存储

    八、ShowScore

    void SpeechContestManager::ShowScore()
{
	cout << "::::::::::第" << this->m_round << "轮晋级选手信息如下:" << "::::::::::" << endl;
	vector<int>v;
	if (this->m_round == 1)
		v = v2;
	else
		v = v_victory;
	for (auto it : v)
		cout << "选手编号:" << it << "\t姓名:" << m_speaker[it].m_name << "\t得分:" << fixed << setprecision(2) << m_speaker[it].m_score[this->m_round - 1] << endl;
	cout << endl;
	system("pause");
	system("cls");
	this->Menu();
}

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    展示的都是晋级成功的或获胜的人的信息，打印比赛后所存储的信息

    九、SaveRecore

    void SpeechContestManager::SaveRecord()
{
	ofstream out;
	out.open(FILENAME, ios::out | ios::app);
	for (auto it : v_victory)
		out << m_speaker[it].m_name << "," <<fixed<<setprecision(2)<< m_speaker[it].m_score[1] << it << ",";
	out << endl;
	cout << "记录保存成功" << endl;
	this->emptyfile = false;
}

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    保存本届获胜者信息，用’,'分隔，ios::app追加写入
    这里有个问题，无法以两位精度保存数据，不知如何解决

    十、LoadRecord

    void SpeechContestManager::LoadRecord()
{
	ifstream in(FILENAME, ios::in);
	if (!in.is_open())
	{
		this->emptyfile = true;
		cout << "文件不存在!" << endl;
		in.close();
		return;
	}
	char ch;
	in >> ch;
	if (in.eof())
	{
		this->emptyfile = true;
		cout << "文件为空!" << endl;
		in.close();
		return;
	}
	this->emptyfile = false;
	in.putback(ch);
	string data;
	int index = 0;
	while (in >> data)
	{
		vector<string>v;
		int pos = -1;
		int start = 0;
		while (true)
		{
			pos = data.find(",", start);
			if (pos == -1)
				break;
			string tmp = data.substr(start, pos - start);
			v.push_back(tmp);
			start = pos + 1;
		}
		this->m_record.insert(make_pair(index, v));
		index++;
	}
	in.close();
}

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    用is_open()判断文件是否打开
    在读出最后一个字符时，in.eof()还是为假的，只当读过最后一个字符再读（读不成功）时in.eof()才变为真,用来判断文件是否为空，读完后用putback()再放回去，如果文件存在且不为空，那么就将数据存入map容器中。
    这里先找到’,‘位置，再用子串截取从start到’,'所在下标的子串。更新start获取新数据。
    这里是为了应用find()查找函数，实际可以用几个临时变量存取，采用空格隔开。

    十一、ShowRecord

    void SpeechContestManager::ShowRecord()
{
	if (this->emptyfile)
		cout << "文件不存在或记录为空!" << endl;
	else
	{
		for (int i = 0; i < this->m_record.size(); i++)
		{
			cout << "第" << i + 1 << "届" <<
				"冠军:" << this->m_record[i][0]  << "\t得分:" << fixed << setprecision(2) << this->m_record[i][1] << "\t"
				"亚军:" << this->m_record[i][2] << "\t得分:" << fixed << setprecision(2) << this->m_record[i][3] << "\t"
				"季军:" << this->m_record[i][4] <<"\t得分:" << fixed << setprecision(2) << this->m_record[i][5] << endl;
		}
	}
	system("pause");
	system("cls");
}

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    使用了map容器得[]访问方法，因数据是以greater<>排序过的，所以按顺序输出三甲即可，这里用emptyfile判断文件是否为空。

    十二、ClearRecord

    void SpeechContestManager::ClearRecord()
{
	cout << "确认清空?(Y/N)" << endl;
	char choice;
	cin >> choice;
	if (choice == 'Y')
	{
		ofstream out(FILENAME, ios::trunc);
		out.close();
		this->InitSpeech();
		this->CreatSpeaker();
		cout << "清空成功!" << endl;
	}
	system("pause");
	system("cls");
}

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    使用ios::trunc清除文件数据

    十三、析构函数

    通过之前的学习，我们知道，容器内部会自己析构释放内存，这里无需实现任何功能SpeechContestManager::~SpeechContestManager() {};

    六、完整函数实现源码

    #include "SpeechcontestManager.h"

SpeechContestManager::SpeechContestManager()
{
	this->InitSpeech();
}

void SpeechContestManager::Menu()
{
	cout << "********************************************" << endl;
	cout << "*********     欢迎参加演讲比赛     *********" << endl;
	cout << "*********      1.开始演讲比赛      *********" << endl;
	cout << "*********      2.查看往期记录      *********" << endl;
	cout << "*********      3.清空比赛记录      *********" << endl;
	cout << "*********      0.退出比赛程序      *********" << endl;
	cout << "********************************************" << endl;
	cout << endl;
}

void SpeechContestManager::Exit()
{
	cout << "欢迎下次使用!" << endl;
	system("pause");
	exit(0);
}

void SpeechContestManager::InitSpeech()
{
	this->v1.clear();
	this->v2.clear();
	this->v_victory.clear();
	this->m_speaker.clear();
	this->m_record.clear();
	this->m_round =1;
}

void SpeechContestManager::CreatSpeaker()
{
	string nameSeed[12] = { { "白羊" },{"金牛"},{"双子"},{"巨蟹"},{"狮子"},{"处女"}
		,{"天秤"},{"天蝎"},{"射手"},{"摩羯"},{"水瓶"},{"双鱼"} };
	for (int i = 0; i < 12; i++)
	{
		Speaker sp;
		sp.m_name = nameSeed[i];
		for (int j = 0; j < 2; j++)
			sp.m_score[j] = 0;
		this->v1.push_back(i + 1001);
		this->m_speaker.insert(make_pair(i + 1001, sp));
	}
}

void SpeechContestManager::StartSpeech()
{
	this->SpeechLot();
	this->SpeechContest();
	this->ShowScore();
	this->m_round++;
	this->SpeechLot();
	this->SpeechContest();
	this->ShowScore();
	this->SaveRecord();
	this->InitSpeech();
	this->CreatSpeaker();
	this->LoadRecord();
	cout << "本届比赛结束!" << endl;
	system("pause");
	system("cls");
}

void SpeechContestManager::SpeechLot()
{
	cout << "第 << " << this->m_round << " >> 轮比赛选手正在抽签" << endl;
	cout << "----------------------------" << endl;
	cout << "抽签后演讲顺序如下" << endl;
	if (this->m_round == 1)
	{
		random_shuffle(v1.begin(), v1.end());
		for (auto it : this->v1)
			cout << it << " ";
		cout << endl;
	}
	else
	{
		random_shuffle(v2.begin(), v2.end());
		for (auto it : this->v2)
			cout << it << " ";
		cout << endl;
	}
	cout << "----------------------------" << endl;
	system("pause");
	cout << endl;
}

void SpeechContestManager::SpeechContest()
{
	cout << "::::::::::第" << this->m_round << "轮比赛正式开始:" << "::::::::::"  << endl;
	multimap<double, int, greater<double>>groupScore;
	int num = 0;
	vector<int>vc;
	if (this->m_round == 1)
		vc = v1;
	else
		vc = v2;
	for (auto it : vc)
	{
		num++;
		deque<double>d;
		for (int i = 0; i < 10; i++)
		{
			double score = (rand() % 400 + 601) / 10.f;
			d.push_back(score);
		}
		sort(d.begin(), d.end());
		d.pop_back();
		d.pop_front();
		double sum = accumulate(d.begin(), d.end(), 0.0f);
		double avg= sum / (double)d.size();
		this->m_speaker[it].m_score[this->m_round - 1] = avg;
		groupScore.insert(make_pair(avg, it));
		if (num % 6 == 0)
		{
			cout << "第" << num / 6 << "小组比赛名次:" << endl;
			for (auto it : groupScore)
				cout << "编号:" << it.second << "\t姓名:" << this->m_speaker[it.second].m_name << "\t成绩" <<fixed<<setprecision(2)<< this->m_speaker[it.second].m_score[this->m_round - 1] << endl;
			int count = 0;
			for (multimap<double, int, greater<double>>::iterator it = groupScore.begin(); it != groupScore.end() && count < 3; it++, count++)
			{
				if (this->m_round == 1)
					v2.push_back(it->second);
				else
					v_victory.push_back(it->second);
			}
			groupScore.clear();
			cout << endl;
		}
	}
	cout << "::::::::::第" << this->m_round << "轮比赛结束:" << ":::::::::::" << endl;
	system("pause");
}

void SpeechContestManager::ShowScore()
{
	cout << "::::::::::第" << this->m_round << "轮晋级选手信息如下:" << "::::::::::" << endl;
	vector<int>v;
	if (this->m_round == 1)
		v = v2;
	else
		v = v_victory;
	for (auto it : v)
		cout << "选手编号:" << it << "\t姓名:" << m_speaker[it].m_name << "\t得分:" << fixed << setprecision(2) << m_speaker[it].m_score[this->m_round - 1] << endl;
	cout << endl;
	system("pause");
	system("cls");
	this->Menu();
}

void SpeechContestManager::SaveRecord()
{
	ofstream out;
	out.open(FILENAME, ios::out | ios::app);
	for (auto it : v_victory)
		out << m_speaker[it].m_name << "," <<fixed<<setprecision(2)<< m_speaker[it].m_score[1] << it << ",";
	out << endl;
	cout << "记录保存成功" << endl;
	this->emptyfile = false;
}

void SpeechContestManager::LoadRecord()
{
	ifstream in(FILENAME, ios::in);
	if (!in.is_open())
	{
		this->emptyfile = true;
		cout << "文件不存在!" << endl;
		in.close();
		return;
	}
	char ch;
	in >> ch;
	if (in.eof())
	{
		this->emptyfile = true;
		cout << "文件为空!" << endl;
		in.close();
		return;
	}
	this->emptyfile = false;
	in.putback(ch);
	string data;
	int index = 0;
	while (in >> data)
	{
		vector<string>v;
		int pos = -1;
		int start = 0;
		while (true)
		{
			pos = data.find(",", start);
			if (pos == -1)
				break;
			string tmp = data.substr(start, pos - start);
			v.push_back(tmp);
			start = pos + 1;
		}
		this->m_record.insert(make_pair(index, v));
		index++;
	}
	in.close();
}

void SpeechContestManager::ShowRecord()
{
	if (this->emptyfile)
		cout << "文件不存在或记录为空!" << endl;
	else
	{
		for (int i = 0; i < this->m_record.size(); i++)
		{
			cout << "第" << i + 1 << "届" <<
				"冠军:" << this->m_record[i][0]  << "\t得分:" << fixed << setprecision(2) << this->m_record[i][1] << "\t"
				"亚军:" << this->m_record[i][2] << "\t得分:" << fixed << setprecision(2) << this->m_record[i][3] << "\t"
				"季军:" << this->m_record[i][4] <<"\t得分:" << fixed << setprecision(2) << this->m_record[i][5] << endl;
		}
	}
	system("pause");
	system("cls");
}

void SpeechContestManager::ClearRecord()
{
	cout << "确认清空?(Y/N)" << endl;
	char choice;
	cin >> choice;
	if (choice == 'Y')
	{
		ofstream out(FILENAME, ios::trunc);
		out.close();
		this->InitSpeech();
		this->CreatSpeaker();
		cout << "清空成功!" << endl;
	}
	system("pause");
	system("cls");
}

SpeechContestManager::~SpeechContestManager() {};



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  • 原文地址：https://blog.csdn.net/qwer1234mnbv_/article/details/125651171