c++小项目：基于STL的演讲比赛流程管理系统-创新互联
一、项目目的
当前文章：c++小项目：基于STL的演讲比赛流程管理系统-创新互联
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运用c++实现一个基于STL的演讲比赛流程管理系统。
- 共两轮，第一轮为分组淘汰赛，第二轮为决赛，共有十名评委，打分方式为去掉最高分和最低分的平均分为基准
- 第一轮共两组，每组六人，为随机分组和抽签决定演讲顺序，每组取前三名进入下一轮 ；
- 第二轮为淘汰赛，六名选手同台竞技，决出冠亚季军；
- 每轮比赛结束后都会公布胜出选手分数及排名；
- 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；该阶段还具有初始化比赛进程、抽签、进行比赛、显示晋级成果、保存分数的功能。
- 查看往届记录：查看往届比赛结冠亚军信息，每次比赛都会记录到文件（格式为csv）中。
- 清空比赛记录：将文件中往届比赛结冠亚军信息清空。
- 退出比赛程序：退出当前程序。
演讲比赛流程管理系统.cpp
#include#include"SpeechManager.h"
#includeusing namespace std;
int main(){srand((unsigned int)time(NULL));
SpeechManager s1;
int input;
while (1){s1.Show_menu();
cout<< " 请输入你的选项： "<< endl;
cin >>input;
switch (input){case 0:
//退出比赛程序
s1.Exit_system();
break;
case 1:
//开始演讲比赛
s1.Start_speech();
break;
case 2:
//查看往届记录
s1.Show_record();
break;
case 3:
//清空比赛记录
s1.Clear_record();
break;
default:
system("cls");//清屏
break;
}
}
system("pause");
return 0;
} 该段为项目的雏形，上面也是接下来我们将要实现的功能。
2. 管理类的实现首先在SpeechManager.h中设计管理类
#pragma once
#includeusing namespace std;
class SpeechManager
{public:
SpeechManager();
~SpeechManager();
}; 然后在SpeechManager.cpp中将构造和析构函数空实现补全
#include "speechManager.h"
SpeechManager::SpeechManager(){}
SpeechManager::~SpeechManager(){}首先在管理类SpeechManager类中添加成员函数void show_Menu()
然后在SpeechManager.cpp中实现
void SpeechManager::Show_menu(){cout<< " "<< endl;
cout<< " 欢迎参加演讲比赛! "<< endl;
cout<< " 1.开始演讲比赛 "<< endl;
cout<< " 2.查看往届记录 "<< endl;
cout<< " 3.清空比赛记录 "<< endl;
cout<< " 0.退出比赛程序 "<< endl;
cout<< " "<< endl;
}实现效果：
首先在在SpeechManager类中添加成员函数void exitSystem()
然后在SpeechManager.cpp中实现
void SpeechManager::Exit_system(){cout<< " 欢迎下次使用 "<< endl;
system("pause");
exit(0);
}实现效果：
在Speaker.h设计选手类
#pragma once;
#include#includeusing namespace std;
class Speaker{public:
string Name;
double Score[2];//最多有两轮成绩
}; 在SpeechManager类中添加成员变量
int rounds; //比赛轮次
vectorv1; //第一轮参与选手（12位
vectorv2;//晋级第二轮的选手（6位
vectorthird;//获得前三名的选手
mapspeaker;//存放编号以及对应具体选手 首先在SpeechManager类中添加成员函数void Init_speaker()
然后在SpeechManager.cpp中实现
void SpeechManager::Init_speaker(){//初始化选手数据
this->v1.clear();
this->v2.clear();
this->third.clear();
this->speaker.clear();
this->rounds = 1;//初始化比赛轮次
}接着在SpeechManager.cpp中的SpeechManager构造函数中调用void Init_speaker()
SpeechManager::SpeechManager(){this->Init_speaker();
}首先在SpeechManager类中添加成员函数void Create_speaker()
然后在SpeechManager.cpp中实现
void SpeechManager::Create_speaker(){string nameSeed = "ABCDEFGHIJKL";
for (int i = 0; i< nameSeed.size(); i++){string name = "选手";
name += nameSeed[i];
Speaker s;
s.Name = name;
for (int j = 0; j< 2; j++) s.Score[j] = 0;
this->v1.push_back(10001 + i);
this->speaker.insert(make_pair(10001 + i, s));
}
}接着在SpeechManager.cpp中的SpeechManager构造函数中调用void Create_speaker()
SpeechManager::SpeechManager(){this->Init_speaker();
this->Create_speaker();
}首先在SpeechManager类中添加成员函数void Start_speech()
然后在SpeechManager.cpp中实现
void SpeechManager::Start_speech(){//第一轮比赛
//抽签
this->Drawing();
//比赛
this->Completion();
//显示晋级成果
this->Show_score();
//第二轮比赛
this->rounds++;
//抽签
this->Drawing();
//比赛
this->Completion();
//显示最终结果
this->Show_score();
//保存分数
this->Record();
cout<< "本届比赛顺利结束"<< endl; //这一条与上面的显示会闪烁过去，原因不明
system("pasue");
system("cls");
}首先在SpeechManager类中添加成员函数void Drawing()
然后在SpeechManager.cpp中实现
void SpeechManager::Drawing(){if (this->rounds == 1) cout<< " 第一轮比赛选手正在抽签"<< endl;
else cout<< " 第二轮比赛选手正在抽签"<< endl;
cout<< "-------------------------------------"<< endl;
cout<< " 演讲顺序如下"<< endl;
if (this->rounds == 1){random_shuffle(v1.begin(), v1.end());
for (vector::iterator it = v1.begin(); it != v1.end(); it++) cout<< *it<< " ";
cout<< endl;
}
else{random_shuffle(v2.begin(), v2.end());
for (vector::iterator it = v2.begin(); it != v2.end(); it++) cout<< *it<< " ";
cout<< endl;
}
cout<< "-------------------------------------"<< endl;
system("pause");
cout<< endl;
} 实现效果：
首先在SpeechManager类中添加成员函数void Completion()
然后在SpeechManager.cpp中实现
void SpeechManager::Completion(){if (this->rounds == 1) cout<< " 第一轮比赛正式开始"<< endl;
else cout<< " 第二轮比赛正式开始"<< endl;
multimap>group;//记录每组选手数据
int num = 0;//6人为一组
vectorv;
if (this->rounds == 1) v = v1;
else v = v2;
for (vector::iterator it = v.begin(); it != v.end(); it++){num++;
dequed;//存放分数
for (int i = 0; i< 10; i++){ double score = (rand() % 401 + 600) / 10.f; //600~1000
d.push_back(score);
}
sort(d.begin(), d.end(), greater());
d.pop_front();//去除最高分
d.pop_back();//去除最低分
double sum = accumulate(d.begin(), d.end(), 0.0f);//计算总分
double avg = sum / (double)d.size();//计算平均分
this->speaker[*it].Score[this->rounds - 1] = avg;
group.insert(make_pair(avg, *it));
//6人一组
if (num % 6 == 0){ if (num / 6 == 1) cout<< "第一小组比赛名次如下："<< endl;
else cout<< "第二小组比赛名次如下："<< endl;
for (multimap>::iterator it = group.begin();
it != group.end(); it++)
cout<< "编号："<< it->second<< " 姓名："
<< this->speaker[it->second].Name
<< " 成绩："<< this->speaker[it->second].Score[this->rounds - 1]
<< endl;
//取各组前三名
int count = 0;
for (multimap>::iterator it = group.begin();
it != group.end() && count< 3; it++, count++){ if (this->rounds == 1) v2.push_back((*it).second);
else third.push_back((*it).second);
}
group.clear();
cout<< endl;
}
}
if (this->rounds == 1) cout<< " 第一轮比赛完毕"<< endl;
else cout<< " 第二轮比赛完毕"<< endl;
system("pause");
} 实现效果：
首先在SpeechManager类中添加成员函数void Show_score()
然后在SpeechManager.cpp中实现
void SpeechManager::Show_score(){if (this->rounds == 1) cout<< " 第一轮比赛晋级选手信息如下："<< endl;
else cout<< " 第二轮比赛晋级选手信息如下："<< endl;
vectorv;
if (this->rounds == 1) v = v2;
else v = third;
for (vector::iterator it = v.begin(); it != v.end(); it++)
cout<< "编号："<< *it<< " 姓名："<speaker[*it].Name
<< " 成绩："<< this->speaker[*it].Score[this->rounds - 1]<< endl;
cout<< endl;
system("pause");
system("cls");
this->Show_menu();
} 实现效果：
第二轮比赛仅需将比赛轮次+1，后续流程与第一轮一样
实现效果：
首先在SpeechManager类中添加成员函数void Record()
然后在SpeechManager.cpp中实现
void SpeechManager::Record(){ofstream ofs;
ofs.open("speech.csv", ios::out | ios::app);// 用输出的方式打开文件
//存入数据
for (vector::iterator it = third.begin(); it != third.end(); it++)
ofs<< *it<< ","<< speaker[*it].Score[1]<< ",";
ofs< 利用记事本打开文件speech.csv，里面保存了前三名选手的编号以及得分
首先在SpeechManager类中添加成员函数和成员变量
void Load_record();//读取往届记录
bool File_is_empty;//判断文件是否为空
map>record;//往届记录 然后在SpeechManager.cpp中实现
void SpeechManager::Load_record(){ifstream ifs("speech.csv", ios::in);
if (!ifs.is_open()){this->File_is_empty = 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->File_is_empty = true;
ifs.close();
return;
}
this->File_is_empty = false;
ifs.putback(ch);//把读取的单个字符放回去
string data;
int index = 0;
while (ifs >>data){vectorv;
int pos = -1;
int start = 0;
while (true){ pos = data.find(",", start);
if (pos == -1) break;
string tmp = data.substr(start, pos - start);
//第一个是起始位置，第二个是到逗号的截取长度
v.push_back(tmp);
start = pos + 1;
}
this->record.insert(make_pair(index, v));
index++;
}
ifs.close();
} 接着在void Record()利用File_is_empty更新文件状态
//比赛完后文件不为空
this->File_is_empty = false;在SpeechManager.cpp中的SpeechManager构造函数中调用void Record()
SpeechManager::SpeechManager(){this->Init_speaker();
this->Create_speaker();
this->Load_record();
}在SpeechManager.cpp中的void Init_speaker()函数中初始化记录容器
this->record.clear();在SpeechManager.cpp中的void Start_speech()函数中重置比赛
//重置比赛
this->Init_speaker();
this->Create_speaker();
this->Load_record();首先在SpeechManager类中添加成员函数void Show_record()
然后在SpeechManager.cpp中实现
void SpeechManager::Show_record(){if (this->File_is_empty) cout<< "文件不存在，或记录为空！"<< endl;
else{for (map>::iterator it = this->record.begin();
it != this->record.end(); it++){ cout<< "第"<< it->first+1<< "届"<<
"冠军编号："<< it->second[0]<< " 得分："<< it->second[1]<< " "
"亚军编号："<< it->second[2]<< " 得分："<< it->second[3]<< " "
"季军编号："<< it->second[4]<< " 得分："<< it->second[5]<< endl;
}
}
system("pause");
system("cls");
} 实现效果：
首先在SpeechManager类中添加成员函数void Clear_record()
然后在SpeechManager.cpp中实现
void SpeechManager::Clear_record()
{cout<< "确认清空？"<< endl
<< "1. Yes"<< endl
<< "2. No"<< endl;
int select;
cin >>select;
if (select == 1){ofstream ofs("speech.csv", ios::trunc);
ofs.close();
this->Init_speaker();
this->Create_speaker();
this->Load_record();
cout<< "清除成功"<< endl;
}
else if (select == 2) return;
else cout<< "输入有误！"<< endl;
system("pause");
system("cls");
}实现效果：
- 至此本项目结束
#pragma once;
#include#includeusing namespace std;
class Speaker{public:
string Name;
double Score[2];
}; #pragma once
#include#include#include #include "SpeechManager.h"
SpeechManager::SpeechManager(){this->Init_speaker();
this->Create_speaker();
this->Load_record();
}
SpeechManager::~SpeechManager(){}
void SpeechManager::Show_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::Exit_system(){cout<< " 欢迎下次使用 "<< endl;
system("pause");
exit(0);
}
void SpeechManager::Init_speaker(){this->v1.clear();
this->v2.clear();
this->third.clear();
this->speaker.clear();
this->record.clear();
this->rounds = 1;
}
void SpeechManager::Create_speaker(){string nameSeed = "ABCDEFGHIJKL";
for (int i = 0; i< nameSeed.size(); i++){string name = "选手";
name += nameSeed[i];
Speaker s;
s.Name = name;
for (int j = 0; j< 2; j++) s.Score[j] = 0;
this->v1.push_back(10001 + i);
this->speaker.insert(make_pair(10001 + i, s));
}
}
void SpeechManager::Start_speech(){this->Drawing();
this->Completion();
this->Show_score();
this->rounds++;
this->Drawing();
this->Completion();
this->Show_score();
this->Record();
this->Init_speaker();
this->Create_speaker();
this->Load_record();
cout<< "本届比赛顺利结束"<< endl;
system("pasue");
system("cls");
}
void SpeechManager::Drawing(){if (this->rounds == 1) cout<< " 第一轮比赛选手正在抽签"<< endl;
else cout<< " 第二轮比赛选手正在抽签"<< endl;
cout<< "-------------------------------------"<< endl;
cout<< " 演讲顺序如下"<< endl;
if (this->rounds == 1){random_shuffle(v1.begin(), v1.end());
for (vector::iterator it = v1.begin(); it != v1.end(); it++) cout<< *it<< " ";
cout<< endl;
}
else{random_shuffle(v2.begin(), v2.end());
for (vector::iterator it = v2.begin(); it != v2.end(); it++) cout<< *it<< " ";
cout<< endl;
}
cout<< "-------------------------------------"<< endl;
system("pause");
cout<< endl;
}
void SpeechManager::Completion(){if (this->rounds == 1) cout<< " 第一轮比赛正式开始"<< endl;
else cout<< " 第二轮比赛正式开始"<< endl;
multimap>group;
int num = 0;
vectorv;
if (this->rounds == 1) v = v1;
else v = v2;
for (vector::iterator it = v.begin(); it != v.end(); it++){num++;
dequed;
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->speaker[*it].Score[this->rounds - 1] = avg;
group.insert(make_pair(avg, *it));
if (num % 6 == 0){ if (num / 6 == 1) cout<< "第一小组比赛名次如下："<< endl;
else cout<< "第二小组比赛名次如下："<< endl;
for (multimap>::iterator it = group.begin(); it != group.end(); it++)
cout<< "编号："<< it->second<< " 姓名："<< this->speaker[it->second].Name
<< " 成绩："<< this->speaker[it->second].Score[this->rounds - 1]<< endl;
int count = 0;
for (multimap>::iterator it = group.begin(); it != group.end() && count< 3; it++, count++){ if (this->rounds == 1) v2.push_back((*it).second);
else third.push_back((*it).second);
}
group.clear();
cout<< endl;
}
}
if (this->rounds == 1) cout<< " 第一轮比赛完毕"<< endl;
else cout<< " 第二轮比赛完毕"<< endl;
system("pause");
}
void SpeechManager::Show_score(){if (this->rounds == 1) cout<< " 第一轮比赛晋级选手信息如下："<< endl;
else cout<< " 第二轮比赛晋级选手信息如下："<< endl;
vectorv;
if (this->rounds == 1) v = v2;
else v = third;
for (vector::iterator it = v.begin(); it != v.end(); it++)
cout<< "编号："<< *it<< " 姓名："<speaker[*it].Name
<< " 成绩："<< this->speaker[*it].Score[this->rounds - 1]<< endl;
cout<< endl;
system("pause");
system("cls");
this->Show_menu();
}
void SpeechManager::Record(){ofstream ofs;
ofs.open("speech.csv", ios::out | ios::app);
for (vector::iterator it = third.begin(); it != third.end(); it++)
ofs<< *it<< ","<< speaker[*it].Score[1]<< ",";
ofs<File_is_empty = false;
}
void SpeechManager::Load_record(){ifstream ifs("speech.csv", ios::in);
if (!ifs.is_open()){this->File_is_empty = 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->File_is_empty = true;
ifs.close();
return;
}
this->File_is_empty = false;
ifs.putback(ch);
string data;
int index = 0;
while (ifs >>data){vectorv;
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->record.insert(make_pair(index, v));
index++;
}
ifs.close();
}
void SpeechManager::Show_record(){if (this->File_is_empty) cout<< "文件不存在，或记录为空！"<< endl;
else{for (map>::iterator it = this->record.begin(); it != this->record.end(); it++){ cout<< "第"<< it->first+1<< "届"<<
"冠军编号："<< it->second[0]<< " 得分："<< it->second[1]<< " "
"亚军编号："<< it->second[2]<< " 得分："<< it->second[3]<< " "
"季军编号："<< it->second[4]<< " 得分："<< it->second[5]<< endl;
}
}
system("pause");
system("cls");
}
void SpeechManager::Clear_record()
{cout<< "确认清空？"<< endl
<< "1. Yes"<< endl
<< "2. No"<< endl;
int select;
cin >>select;
if (select == 1){ofstream ofs("speech.csv", ios::trunc);
ofs.close();
this->Init_speaker();
this->Create_speaker();
this->Load_record();
cout<< "清除成功"<< endl;
}
else if (select == 2) return;
else cout<< "输入有误！"<< endl;
system("pause");
system("cls");
} #include#include"SpeechManager.h"
#includeusing namespace std;
int main(){srand((unsigned int)time(NULL));
SpeechManager s1;
int input;
while (1){s1.Show_menu();
cout<< " 请输入你的选项： "<< endl;
cin >>input;
switch (input){case 0:
s1.Exit_system();
break;
case 1:
s1.Start_speech();
break;
case 2:
s1.Show_record();
break;
case 3:
s1.Clear_record();
break;
default:
system("cls");
break;
}
}
system("pause");
return 0;
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