该案例是黑马的案例，不方便下载源代码的可以看一下
该案例有两个头文件，两个源文件
main.c ：与用户交互 ，显示菜单等
#include<iostream>
using namespace std;
#include"speechManager.h"
#include<ctime>
int main()
{
srand((unsigned int)time(NULL));
SpeechManager sm;//创建speechmanager对象
for (auto it = sm.m.begin(); it != sm.m.end(); it++)
{
cout << "编号:" << it->first << " 姓名:" << it->second.m_name << " 分数：" << it->second.m_score[0] << endl;
}
while (1)
{
sm.showMeneu();
cout << "请选择：" << endl;
int chooce;
cin >> chooce;
switch (chooce)
{
case 1:
sm.startspeech();//开始比赛
break;
case 2:
sm.showrecord();//比赛记录
break;
case 3:
sm.clearecord();//清除记录
break;
case 0:
sm.exitsystem();//退出程序
break;
default:
system("cls");
break;
}
}
system("pause");
return 0;
}speaker.h ：里面存放speeker类
#pragma once
#include<iostream>
using namespace std;
#include<string>
class Speaker
{
public:
string m_name;
double m_score[2];//最多有两轮得分
};speechmanager.h ： 存放功能函数的声明，以及speaker的容器
第一轮演讲12人，用v1存储
第二轮6人，用v2存储
胜出的3人，用win存储
#pragma
#include<iostream>
#include<vector>
#include<map>
#include"speaker.h"
#include<algorithm>
#include<numeric>
#include<string>
#include<fstream>
using namespace std;
class SpeechManager
{
public:
SpeechManager();
//菜单
void showMeneu();
//退出
void exitsystem();
//容器初始化
void initspeech();
//创建选手
void creatspeaker();
~SpeechManager();
//开始比赛
void startspeech();
//抽签
void speechdraw();
//比赛进程
void speechcontest();
//显示得分
void showscore();
//保存分数
void saverecord();
//读取记录
void loadrecord();
//显示往届记录
void showrecord();
//判断文件是否为空
bool fileempty;
//存放往届记录的容器
map<int, vector<string>>m_record;
//清空记录
void clearecord();
vector<int>v1;
vector<int>v2;
vector<int>win;
map<int, Speaker>m;
int m_index;
};
speechmanager.c ：功能函数的实现
#include<iostream>
using namespace std;
#include"speechManager.h"
#include<deque>
#include<algorithm>
SpeechManager::SpeechManager()
{
this->initspeech();
this->creatspeaker();\
//加载往届记录
this->loadrecord();
}
void SpeechManager::showMeneu()
{
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;
}
void SpeechManager::exitsystem()
{
cout << "欢迎下次使用" << endl;
system("pause");
exit(0);
}
void SpeechManager::initspeech()
{
//容器置空
this->v1.clear();
this->v2.clear();
this->win.clear();
this->m.clear();
this->m_index = 1;
this->m_record.clear();
}
//创建选手
void SpeechManager::creatspeaker()
{
string nameseed = "ABCDEFGHIJKL";
for (int i = 0; i < nameseed.size(); i++)
{
string name = "选手";
name += nameseed[i];
Speaker sp;
sp.m_name = name;
for (int i = 0; i < 2; i++)
{
sp.m_score[i] = 0;
}
this->v1.push_back(i+10001);
this->m.insert(make_pair(i + 10001, sp));
}
}
//开始比赛
void SpeechManager::startspeech()
{
//第一轮开始比赛
//抽签
this->speechdraw();
//比赛
this->speechcontest();
//显示结果
this->showscore();
//第二轮开始比赛
this->m_index++;
//抽签
this->speechdraw();
//比赛
this->speechcontest();
//显示结果
this->showscore();
//保存记录
this->saverecord();
this->initspeech();
this->creatspeaker();
this->loadrecord();
cout << "比赛完毕。" << endl;
system("pause");
system("cls");
}
void SpeechManager::speechdraw()
{
cout << "第<<" << this->m_index << ">>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_index == 1)
{
random_shuffle(v1.begin(), v1.end());
for (auto it = v1.begin(); it != v1.end(); it ++ )
{
cout << *it << " ";
}
}
else
{
random_shuffle(v2.begin(), v2.end());
for (auto it = v2.begin(); it != v2.end(); it ++ )
{
cout << *it << " ";
}
}
cout << "————————————" << endl;
system("pause");
cout << endl;
}
void SpeechManager::speechcontest()
{
cout << "————————第<<" << this->m_index << ">>轮比赛开始————————" << endl;
//临时容器存放成绩
multimap<double, int, greater<double>>group;
int num = 0;
vector<int>v_scr;
if (this->m_index == 1)
{
v_scr = v1;
}
else
{
v_scr = v2;
}
for (auto it = v_scr.begin(); it != v_scr.end(); it++)
{
num++;
deque<double>d;
for (int i = 0; i < 10; i++)
{
double score = (rand() % 401 + 600)/10.f;
//cout << score << " ";
d.push_back(score);
}
sort(d.begin(), d.end(), greater<double>());
d.pop_back();
d.pop_front();
double sum = accumulate(d.begin(), d.end(), 0);
//平均分
double avr = sum / (double)d.size();
//cout << "编号：" <<*it<< " 姓名："<<this->m[*it].m_name<<" 平均分："<<avr<<endl;
//平均分放入map
this->m[*it].m_score[this->m_index - 1] = avr;
//分数放入临时容器
group.insert(make_pair(avr, *it));//key是平均分 val是编号
if (num % 6 == 0)
{
cout << "第<<" << num / 6 << ">>小组比赛名次：" << endl;
for (auto it = group.begin(); it != group.end(); it++)
{
cout << "编号:" << it->second << " 姓名:"
<< this->m[it->second].m_name << " 成绩：" << it->first << endl;
}
//取前三
int count = 0;
for (auto it=group.begin();it!=group.end()&&count<3;it++,count++)
{
if (this->m_index==1)
{
v2.push_back((*it).second);
}
else
{
win.push_back((*it).second);
}
}
group.clear();
cout << endl;
}
}
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 << ">>轮晋级选手信息如下——————" << endl;
vector<int>v;
if (this->m_index == 1)
{
v = v2;
}
else
{
v = win;
}
for (auto it = v.begin(); it!= v.end(); it++)
{
cout << "编号:" << *it << " 姓名:"
<< this->m[*it].m_name << " 成绩：" << this->m[*it].m_score[this->m_index-1] << endl;
}
cout << endl;
system("pause");
system("cls");
this->showMeneu();
}
void SpeechManager::saverecord()
{
ofstream ofs;
ofs.open("speech.csv", ios::out | ios::app);
for (auto it = win.begin(); it != win.end(); it++)
{
ofs << *it << "," << this->m[*it].m_score[1] << ",";
}
ofs << endl;
ofs.close();
cout << "记录已保存" << endl;
this->fileempty = false;
}
void SpeechManager::loadrecord()
{
ifstream ifs("speech.csv", ios::in);
if (!ifs.is_open())
{
this->fileempty = true;
//cout << "文件不存在。" << endl;
ifs.close();
return;
}
char ch;
ifs >> ch;
if (ifs.eof())
{
//cout << "文件为空。" << endl;
this->fileempty = true;
ifs.close();
return;
}
this->fileempty = false;
ifs.putback(ch);
string data;
int index = 0;
while (ifs >> data)
{
vector<string>v;
int pos = -1;//查到逗号位置的变量
int start = 0;
while (true)
{
pos = data.find(",",start);
if (pos == -1)
{
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 (auto it = this->m_record.begin(); it != this->m_record.end(); it++)
{
cout << it->first << " 冠军编号： " << it->second[0] << "分数： " << it->second[1] << endl;
}
}
void SpeechManager::showrecord()
{
if (this->fileempty)
{
cout << "文件为空或不存在"<<endl;
}
else {
for (int i = 0; i < this->m_record.size(); i++)
{
cout << "第<<" << i + 1 << ">>届" << endl
<< " 冠军编号： " << this->m_record[i][0] << "分数： " << this->m_record[i][1] << endl
<< " 亚军编号： " << this->m_record[i][2] << "分数： " << this->m_record[i][3] << endl
<< " 季军编号： " << this->m_record[i][4] << "分数： " << this->m_record[i][5] << endl;
}
}
}
void SpeechManager::clearecord()
{
cout << "是否确认清空？" << endl;
cout << "1、是" << endl << "2、否" << endl;
int select = 0;
cin >> select;
if (select==1)
{
ofstream ofs("speech.csv", ios::trunc);
ofs.close();
this->initspeech();
this->creatspeaker();
this->loadrecord();
cout << "清空成功" << endl;
}
system("pause");
system("cls");
}
SpeechManager::~SpeechManager()
{
}