黑马：演讲比赛流程管理系统（264~281）

1. 比赛规则

学校举行一场演讲比赛，共12个人参加，比赛共两轮，第一轮淘汰赛，第二轮决赛

每名选手都有编号（如10001~10012）

比赛方式：分组比赛，每组6个人

第一轮分为两个小组，整体按照选手编号进行抽签后顺序演讲

十名评委分别给每名选手打分，去除最高分和最低分，平均分为选手成绩

小组演讲完毕后，淘汰组内排名最后的三名选手，前三名晋级，进入下一轮比赛

第二轮为决赛，前三名胜出

每轮比赛过后需要显示晋级选手的信息

1.2 程序功能

开始演讲比赛：完成整届比赛的流程，每个比赛阶段需要给用户一个提示，用户按任意键后继续下一个阶段

查看往届记录：查看之前比赛的前三名结果，每次比赛都会记录到文件中，文件用.csv后缀名保存

清空比赛记录：将文件中数据清空

退出比赛系统：可以退出当前程序

头文件

speaker.h

#pragma once
#include
using namespace std;

//选手类
class Speaker {
public:
	string m_Name;
	double m_Score[2]; //分数 最多有两轮得分
};

speechManager.h

#pragma once
#include 
using namespace std;
#include 
#include 
#include 

源文件

speechManager.cpp

#include "speechManager.h"

#define SAVEFILE "saveFile.csv"

//构造函数
SpeechManager::SpeechManager()
{
	//初始化比赛
	initSpeech();

	//创建选手
	createSpeech();

	//加载往届记录
	loadRecord();
}

//显示菜单
void SpeechManager::showMenu()
{
	cout << "------------------------------------------------" << endl;
	cout << "***************  欢迎参加演讲比赛  *************" << endl;
	cout << "***************  1.开始演讲比赛  ***************" << endl;
	cout << "***************  2.查看往届记录  ***************" << endl;
	cout << "***************  3.清空比赛记录  ***************" << endl;
	cout << "***************  0.退出比赛程序  ***************" << endl;
	cout << "------------------------------------------------" << endl;
	cout << endl;
}

//初始化比赛
void SpeechManager::initSpeech()
{
	//容器清空
	this->v1.clear();
	this->v2.clear();
	this->vVictory.clear();
	this->m_Speaker.clear();

	//记录比赛轮数
	this->m_Index = 1;

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

//创建选手
void SpeechManager::createSpeech()
{
	string nameSeed = "ABCDEFGHIJKL";

	for (int i = 0; i < 12; i++)
	{
		string name = "选手";
		name += nameSeed[i];

		Speaker sp;
		sp.m_Name = name;
		for (int j = 0; j < 2; j++)
		{
			sp.m_Score[j] = 0;
		}

		this->v1.push_back(1001 + i);

		this->m_Speaker.insert(make_pair(1001 + i, sp));

	}
}

//开始比赛 1
void SpeechManager::startSpeech()
{
	//第一轮比赛

	//1、抽签
	this->drawSpeech();

	//2、比赛
	this->contestSpeech();

	//3、显示晋级结果
	this->showScore();

	//第二轮比赛
	this->m_Index++;

	//1、抽签
	this->drawSpeech();

	//2、比赛
	this->contestSpeech();

	//3、显示胜利结果
	this->showScore();

	//4、保存比赛记录
	this->saveRecord();

	//重置比赛，获取记录
	//初始化比赛
	this->initSpeech();
	//创建12名选手
	this->createSpeech();
	//加载往届记录
	this->loadRecord();

	cout << "本届比赛完毕！" << endl;

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

}

//选手抽签 1-1
void SpeechManager::drawSpeech()
{
	cout << "------- 第" << this->m_Index << "轮比赛选手正在抽签 ---------" << endl;

	if (this->m_Index == 1)
	{
		random_shuffle(this->v1.begin(), this->v1.end());
		//for (vector::iterator it = v1.begin(); it != v1.end(); it++)
		//{
		//	cout << *it << " ";
		//}
		//cout << endl;
	}
	else
	{
		random_shuffle(this->v2.begin(), this->v2.end());
		//for (vector::iterator it = v2.begin(); it != v2.end(); it++)
		//{
		//	cout << *it << " ";
		//}
		//cout << endl;
	}
}

//打分比赛 1-2 
void SpeechManager::contestSpeech()
{
	cout << "第" << this->m_Index << "轮比赛正式开始" << endl;

	//准备临时容器 存放小组成员
	multimap> groupScore;

	int num = 0; //记录人员个数 6人一组

	vector v;
	if (this->m_Index == 1)
	{
		v = v1;
	}
	else
	{
		v = v2;
	}

	for (vector::iterator it = v.begin(); it != v.end(); it++)
	{
		num++;

		deque d;

		for (int i = 0; i < 10; i++)
		{
			double score = (rand() % 401 + 600) / 10.f;
			d.push_back(score);
		}

		sort(d.begin(), d.end(), greater());

		d.pop_front();
		d.pop_back();

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

		this->m_Speaker[*it].m_Score[this->m_Index - 1] = avg;

		groupScore.insert(make_pair(avg, *it));

		//每6人取出前三名
		if (num % 6 == 0)
		{
			cout << "第" << num / 6 << "小组比赛名次如下" << endl;
			for (multimap>::iterator it = groupScore.begin(); it != groupScore.end(); it++)
			{
				cout << "编号：" << it->second
					<< " 姓名：" << this->m_Speaker[it->second].m_Name
					<< " 分数：" << this->m_Speaker[it->second].m_Score[this->m_Index - 1] << endl;
			}
			cout << endl;

			int count = 0;
			for (multimap>::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();	//小组临时容器清空
		}
	}

	cout << "--------- 第" << this->m_Index << "轮比赛完毕！------------" << endl;
	cout << endl;
}

//显示分数 1-3
void SpeechManager::showScore()
{
	cout << "------- 第" << this->m_Index << "轮晋级选手如下：---------" << endl;

	vector v;

	if (this->m_Index == 1)
	{
		v = v2;
	}
	else
	{
		v = vVictory;
	}

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

	system("pause");
	system("cls");
	this->showMenu();
}

//保存记录 1-4
void SpeechManager::saveRecord()
{
	ofstream ofs;

	ofs.open(SAVEFILE, ios::out | ios::app);

	for (vector::iterator it = vVictory.begin(); it != vVictory.end(); it++)
	{
		ofs << *it << "," << this->m_Speaker[*it].m_Score[1] << ",";
	}
	ofs << endl;

	ofs.close();

	//有记录后不为空
	this->m_FileIsEmpty = false;

	cout << "比赛记录已经保存" << endl;
}

//读取记录 2
void SpeechManager::loadRecord()
{
	ifstream ifs(SAVEFILE, ios::in);

	//文件不存在
	if (!ifs.is_open())
	{
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	char ch;
	ifs >> ch;
	//文件为空
	if (ifs.eof())
	{
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	this->m_FileIsEmpty = false; //文件不为空
	ifs.putback(ch);

	string data;
	int index = 0;

	while (ifs >> data)
	{
		//cout << data << endl;
		int pos = -1; //查找逗号的位置
		int start = 0;
		int len = 0;
		string str;
		vector v_str;

		while (true)
		{
			//返回查找逗号的位置
			pos = data.find(',', start);

			if (pos == -1)
			{
				//没有找到的情况
				break;
			}
			else
			{
				//计算截取的字符串长度
				len = pos - start;
				//截取逗号前的字符串
				str = data.substr(start, len);
				//添加到容器中
				v_str.push_back(str);
				//更新截取起始值
				start = pos + 1;
			}
		}
		this->m_Record.insert(make_pair(index, v_str));
		//累计届数
		index++;
	}
	ifs.close();

	//for (map>::iterator it = this->m_Record.begin(); it != this->m_Record.end(); it++)
	//{
	//	cout << "第" << it->first + 1 << "届比赛记录："
	//		<< " 冠军编号：" << it->second[0] << " 分数：" << it->second[1]
	//		<< " 亚军编号：" << it->second[2] << " 分数：" << it->second[3]
	//		<< " 季军编号：" << it->second[4] << " 分数：" << it->second[5] << endl;
	//}
}

//显示往届记录
void SpeechManager::showRecord()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或为空" << endl;
	}
	else
	{
		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");
}

//清空比赛记录
void SpeechManager::clearRecord()
{
	cout << "请确认是否要清空！" << endl;
	cout << "1、确认\n2、返回" << endl;

	int select = 0;
	cin >> select;

	if (select == 1)
	{
		ofstream ofs(SAVEFILE, ios::trunc);
		ofs.close();

		//初始化比赛
		initSpeech();

		//创建选手
		createSpeech();

		//加载往届记录
		loadRecord();

		cout << "清空成功" << endl;
	}

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


//退出系统 0
void SpeechManager::exitSystem()
{
	cout << "欢迎下次使用" << endl;
	system("pause");
	exit(0);
}

//析构函数
SpeechManager::~SpeechManager()
{

}

演讲比赛流程管理系统.cpp

#include "speechManager.h"
#include 

int main()
{
	srand((unsigned int)time(NULL));

	SpeechManager sm;

	int choice = 0;
	while (true)
	{
		sm.showMenu();

		cout << "请输入您的选择：" << endl;
		cin >> choice;

		switch (choice)
		{
		case 1:	//开始比赛
			sm.startSpeech();
			break;
		case 2:	//查看往届比赛记录
			sm.showRecord();
			break;
		case 3:	//清空比赛记录
			sm.clearRecord();
			break;
		case 0:	//退出系统
			sm.exitSystem();
			break;
		default:
			system("cls");//清屏	
			break;
		}

	}
	system("pause");

	return 0;
}