相关视频——黑马程序员C (264-281)
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
代码语言：javascript复制#pragma once
#include<iostream>
using namespace std;
class Speaker
{
public:
string m_Name;
double m_Score[2];//两轮得分
};SpeechManager.h
代码语言：javascript复制#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
代码语言：javascript复制#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
代码语言：javascript复制#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;
}
