一.项目需求
1.比赛规则
- 学校举行一场演讲比赛,共有12个人参加。比赛共两轮,第一轮为淘汰赛,第二轮为决赛。
- 每名选手都有对应的编号,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.
- 十个评委分别给每名选手打分,**去除最高分和最低分,**求的平均分为本轮选手的成绩
- 当小组演讲完后,淘汰组内排名最后的三个选手,前三名晋级,进入下一轮的比赛
- 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
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
- 退出比赛程序:可以退出当前程序
二.界面实现
实际开发过程中,先写主界面,一些部分可以用伪代码注释,以后再慢慢实现:
#include <iostream>
#include <ctime>
#include "speechmanger.h"
using namespace std;
int main()
{
Speechmanger sm;
int choice = 0;
srand((unsigned int)time(NULL));
while (true)
{
sm.showmenu();
cout << "请您输入您的选择:" << endl;
cin >> choice;
switch (choice)
{
case 1:
sm.startgame(); //开始比赛
break;
case 2:
sm.showrecord(); //查看记录
break;
case 3:
sm.clearfile(); //清空文件
break;
case 0:
sm.exitsystem(); //退出系统
break;
default:
system("cls");
break;
}
}
system("pause");
return 0;
}
三.管理类头文件
speechmanger.h
头文件:
#pragma once
#include <iostream>
#include <string>
#include "speaker.h"
#include <vector>
#include <map>
#include <algorithm>
#include <deque>
#include <functional>
#include <numeric>
#include <fstream>
using namespace std;
//演讲管理类
class Speechmanger
{
public:
Speechmanger(); //构造函数
~Speechmanger(); //析构函数
void showmenu(); //显示菜单
void exitsystem(); //退出系统
void initspeech(); //初始化容器和属性
void creatspeaker(); //创建选手
void startgame(); //开始比赛
void speechdraw(); //抽签
void contest(); //比赛(打分)
double avg_score(); //计算成绩
void showscore(); //显示得分(1)
void showhonor(); //显示决赛获奖名单
void saverecord(); //保存本届决赛记录
void loadrecord(); //读取比赛记录
void showrecord(); //显示往届记录
void clearfile(); //清空文件
//成员属性
vector<int> v1; //保存第一轮选手编号
vector<int> v2; //保存第二轮选手编号,也就是第一轮晋级选手编号
vector<int> v3; //保存最后胜出3名选手编号
map<int, Speaker> m_s; //存放编号及其具体对应选手的容器
int index; //记录当前比赛轮次
bool fileempty; //文件空标志
map<int, vector<string>> m_record; //存放往届记录的容器
};
像我这样,属性和方法分开写。
四.方法实现
speechmanger.cpp
源文件实现:
#include "speechmanger.h"
Speechmanger::Speechmanger()
{
this->initspeech();
this->creatspeaker();
this->loadrecord();
}
Speechmanger::~Speechmanger()
{
}
//显示菜单
void Speechmanger::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;
}
//退出系统
void Speechmanger::exitsystem()
{
cout << "欢迎下次使用" << endl;
exit(0);
}
//初始化容器和属性
void Speechmanger::initspeech()
{
//容器都置空
this->v1.clear();
this->v2.clear();
this->v3.clear();
this->m_s.clear();
this->m_record.clear();
//比赛轮次初始为1
this->index = 1;
}
//创建12名选手
void Speechmanger::creatspeaker()
{
string namesed = "ABCDEFGHILKL";
for (int i = 0; i < namesed.size(); i++)
{
string name = "选手";
name += namesed[i];
Speaker sp;
sp.m_name = name;
for (int j = 0; j < 2; j++)
{
sp.m_score[j] = 0;
}
this->v1.push_back(i + 10001); //创建选手编号,放入v1容器中
this->m_s.insert(make_pair(i + 10001, sp)); //记录编号和选手对应关系
}
}
//开始比赛
void Speechmanger::startgame()
{
//第一轮开始比赛
//1.抽签
this->speechdraw();
//2.比赛(打分)
this->contest();
//3.显示晋级名单
this->showscore();
//第二轮开始比赛
this->index++;
//1.抽签
this->speechdraw();
//2.比赛(打分)
this->contest();
//3.显示获奖名单
this->showhonor();
//4.结果保存到文件中
this->saverecord();
//重置环境
this->initspeech();
this->creatspeaker();
this->loadrecord();
cout << "本届比赛结束!" << endl;
system("pause");
system("cls");
}
//抽签
void Speechmanger::speechdraw()
{
cout << "第" << this->index << "轮选手正在抽签:" << endl;
cout << "--------------------------------------" << endl;
cout << "抽签后的结果如下:" << endl;
if (this->index == 1)
{
random_shuffle(v1.begin(), v1.end());
for (vector<int>::iterator it = v1.begin(); it != v1.end(); it++)
{
cout << *it << " ";
}
cout << endl;
}
else if (this->index == 2)
{
random_shuffle(v2.begin(), v2.end());
for (vector<int>::iterator it = v2.begin(); it != v2.end(); it++)
{
cout << *it << " ";
}
cout << endl;
}
else
cout << "程序出现错误" << endl;
cout << "--------------------------------------" << endl;
system("pause");
cout << endl;
}
//比赛(打分)
void Speechmanger::contest()
{
cout << "---第" << this->index << "轮比赛开始:---" << endl;
vector<int> v_src; //比赛容器
if (this->index == 1)
v_src = v1;
if (this->index == 2)
v_src = v2;
multimap<double, int, greater<double>> groupscore; //临时容器,存放小组成绩
int num = 0; //记录人数,6个人一组
//遍历所有选手开始打分
for (vector<int>::iterator it = v_src.begin(); it != v_src.end(); it++)
{
num++;
double score = this->avg_score();
this->m_s[*it].m_score[index - 1] = score; //第四种插入方式
groupscore.insert(make_pair(score,*it));
if (num % 6 == 0)
{
cout << "第" << num / 6 << "小组的成绩如下:" << endl;
for (multimap<double, int, greater<double>>::iterator dit = groupscore.begin(); dit != groupscore.end(); dit++)
{
cout << "编号:" << dit->second << " 姓名:" << this->m_s[dit->second].m_name
<< " 成绩:" << this->m_s[dit->second].m_score[this->index - 1] << endl;
}
//取走前3名
int count = 0;
for (multimap<double, int, greater<double>>::iterator fit = groupscore.begin(); fit != groupscore.end()&& count<3; fit++,count++)
{
if (this->index == 1)
{
v2.push_back((*fit).second);
}
else
v3.push_back((*fit).second);
}
groupscore.clear();
cout << endl;
}
}
cout << "---第" << this->index << "轮比赛结束---" << endl;
system("pause");
}
//计算成绩
double Speechmanger::avg_score()
{
deque<double> 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<double>()); //降序排序
//去除最高分和最低分
d.pop_back();
d.pop_front();
double sum = accumulate(d.begin(), d.end(), 0.0f);
double avg = sum / (double)d.size();
return avg;
}
//显示得分(1)
void Speechmanger::showscore()
{
cout << "第一轮晋级决赛选手如下:" << endl;
for (vector<int>::iterator it = v2.begin(); it != v2.end(); it++)
{
cout << "选手编号:" << *it << " 姓名:" << this->m_s[*it].m_name << " 得分:"
<< this->m_s[*it].m_score[0]<<endl;
}
cout << endl;
system("pause");
system("cls");
this->showmenu();
}
//显示决赛获奖名单
void Speechmanger::showhonor()
{
cout << "第二轮决赛获奖选手如下:" << endl;
for (vector<int>::iterator it = v3.begin(); it != v3.end(); it++)
{
cout << "选手编号:" << *it << " 姓名:" << this->m_s[*it].m_name << " 得分:"
<< this->m_s[*it].m_score[this->index-1] << endl;
}
cout << endl;
system("pause");
system("cls");
this->showmenu();
}
//保存本届决赛记录
void Speechmanger::saverecord()
{
ofstream ofs;
ofs.open("speech.csv",ios::out | ios::app); //以追加方式写文件
for (vector<int>::iterator it = v3.begin(); it != v3.end(); it++)
{
ofs << *it << "," << this->m_s[*it].m_name << "," << this->m_s[*it].m_score[1] <<",";
}
ofs<<endl;
ofs.close();
cout << "记录保存完毕" << endl;
this->fileempty = false;
}
//读取比赛记录
void Speechmanger::loadrecord()
{
ifstream ifs("speech.csv", ios::in); //读文件
//文件不存在
if(!ifs.is_open())
{
this->fileempty = true;
return;
}
//文件存在但被清空
char ch;
ifs >> ch;
if (ifs.eof())
{
this->fileempty = true;
ifs.close();
return;
}
//文件不为空
this->fileempty = false;
ifs.putback(ch);
string data;
int num = 0;
while (ifs >> data)
{
vector<string> v;
int pos = -1; //查找","的位置
int start = 0; //开始查找的位置
while (true)
{
pos = data.find(",", start);
if (pos == -1)
{
//没有找到的情况
break;
}
string temp = data.substr(start, pos - start);
v.push_back(temp);
start = pos + 1;
}
this->m_record.insert(make_pair(num, v));
num++;
}
ifs.close();
}
//显示往届记录
void Speechmanger::showrecord()
{
if (this->fileempty)
{
cout << "文件为空或记录不存在!" << endl;
}
else
{
for (int i = 0; i < this->m_record.size(); i++)
{
cout << "第" << i + 1 << "届信息:" << endl;
cout << "冠军编号:" << this->m_record[i][0] << " 冠军姓名:" << this->m_record[i][1] << " 冠军得分:" << this->m_record[i][2] << endl;
cout << "亚军编号:" << this->m_record[i][3] << " 亚军姓名:" << this->m_record[i][4] << " 亚军得分:" << this->m_record[i][5] << endl;
cout << "季军编号:" << this->m_record[i][6] << " 季军姓名:" << this->m_record[i][7] << " 季军得分:" << this->m_record[i][8] << endl;
}
}
system("pause");
system("cls");
}
//清空文件
void Speechmanger::clearfile()
{
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();
this->initspeech();
this->creatspeaker();
this->loadrecord();
cout << "清空成功!" << endl;
}
system("pause");
system("cls");
}