运用c++实现一个基于STL的演讲比赛流程管理系统。
演讲比赛流程管理系统.cpp
#include<iostream>
#include"SpeechManager.h"
#include<ctime>
using 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。
首先在SpeechManager.h中设计管理类
#pragma once
#include<iostream>
using 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<iostream>
#include<string>
using 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
vector<int>v1; //第一轮参与选手（12位
vector<int>v2;//晋级第二轮的选手（6位
vector<int>third;//获得前三名的选手
map<int, Speaker>speaker;//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<int>::iterator it = v1.begin(); it != v1.end(); it++) cout << *it << " ";
cout << endl;
}
else{
random_shuffle(v2.begin(), v2.end());
for (vector<int>::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<double, int, greater<double>>group;//记录每组选手数据
int num = 0;//6人为一组
vector<int>v;
if (this->rounds == 1) v = v1;
else v = v2;
for (vector<int>::iterator it = v.begin(); it != v.end(); it++){
num++;
deque<double>d;//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<double>());
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<double, int, greater<double>>::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<double, int, greater<double>>::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;
vector<int>v;
if (this->rounds == 1) v = v2;
else v = third;
for (vector<int>::iterator it = v.begin(); it != v.end(); it++)
cout << "编号：" << *it<< " 姓名：" <<this-> 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<int>::iterator it = third.begin(); it != third.end(); it++)
ofs << *it << "," << speaker[*it].Score[1] << ",";
ofs <<endl;
ofs.close();
cout << "记录已保存" << endl; //这一条与接下来的显示会闪烁过去，原因不明
}
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<int, vector<string>>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){
vector<string>v;
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<int, vector<string>>::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：
#pragma once;
#include<iostream>
#include<string>
using namespace std;
class Speaker{
public:
string Name;
double Score[2];
};
#pragma once
#include<iostream>
#include<vector>
#include<map>
#include"Speaker.h"
#include<algorithm>
#include<numeric>
#include<functional>
#include<deque>
#include<fstream>
using namespace std;
class SpeechManager{
public:
SpeechManager();
void Show_menu();
void Exit_system();
void Init_speaker();
int rounds;
vector<int>v1;
vector<int>v2;
vector<int>third;
map<int, Speaker>speaker;
void Create_speaker();
void Start_speech();
void Drawing();
void Show_score();
void Record();
void Completion();
void Load_record();
bool File_is_empty;
map<int, vector<string>>record;
void Show_record();
void Clear_record();
~SpeechManager();
};
#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<int>::iterator it = v1.begin(); it != v1.end(); it++) cout << *it << " ";
cout << endl;
}
else{
random_shuffle(v2.begin(), v2.end());
for (vector<int>::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<double, int, greater<double>>group;
int num = 0;
vector<int>v;
if (this->rounds == 1) v = v1;
else v = v2;
for (vector<int>::iterator it = v.begin(); it != v.end(); it++){
num++;
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>());
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<double, int, greater<double>>::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<double, int, greater<double>>::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;
vector<int>v;
if (this->rounds == 1) v = v2;
else v = third;
for (vector<int>::iterator it = v.begin(); it != v.end(); it++)
cout << "编号：" << *it<< " 姓名：" <<this-> 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<int>::iterator it = third.begin(); it != third.end(); it++)
ofs << *it << "," << speaker[*it].Score[1] << ",";
ofs <<endl;
ofs.close();
cout << "记录已保存" << endl;
this->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){
vector<string>v;
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<int, vector<string>>::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<iostream>
#include"SpeechManager.h"
#include<ctime>
using 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;
}