足球联赛管理系统，c++写

就按照这个要求做一个足球联赛的管理系统，尽量简易一点。谢谢。

#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <fstream>
// 球队类
class Team {
    public:
      std::string name;
    // 球队名称
    int id;
    // 编号
    int points;
    // 积分
    std::vector<std::string> homeLossOpponents;
    // 主场失利的对手名称
    // 构造函数
    Team(std::string name, int id) : name(name), id(id), points(0) {
    }
    // 球队比赛数据
    struct MatchData {
        int round;
        // 轮次
        bool isHome;
        // 是否为主场
        std::string opponent;
        // 对手名称
        int goalsScored;
        // 进球数
        int goalsConceded;
        // 失球数
        int score;
        // 本场得分
        // 构造函数
        MatchData(int round, bool isHome, std::string opponent, int goalsScored, int goalsConceded, int score)
                : round(round), isHome(isHome), opponent(opponent), goalsScored(goalsScored), goalsConceded(goalsConceded),
                  score(score) {
        }
    }
    ;
    std::vector<MatchData> matchData;
    // 比赛数据
    // 添加比赛数据
    void addMatchData(int round, bool isHome, std::string opponent, int goalsScored, int goalsConceded, int score) {
        matchData.emplace_back(round, isHome, opponent, goalsScored, goalsConceded, score);
        points += score;
        if (isHome && score == 0) {
            homeLossOpponents.push_back(opponent);
        }
    }
    // 显示球队比赛数据
    void showMatchData() const {
        std::cout << "球队名称\t联赛轮次\t主或客场\t对手球队\t进球数\t失球数\t本场得分\t积分\n";
        for (const auto &data : matchData) {
            std::cout << name << '\t' << data.round << '\t' << (data.isHome ? "主" : "客") << '\t' << data.opponent << '\t'
                            << data.goalsScored<< '\t' << data.goalsConceded << '\t' << data.score << '\t' << points << '\n';
        }
    }
    // 显示主场失利的对手名称
    void showHomeLossOpponents() const {
        std::cout << "主场失利的对手名称:\n";
        for (const auto &opponent : homeLossOpponents) {
            std::cout << opponent << '\n';
        }
    }
}
;
int main() {
    // 初始化球队
    std::vector<Team> teams;
    teams.emplace_back("广州队", 1);
    teams.emplace_back("山东队", 2);
    teams.emplace_back("深圳队", 3);
    teams.emplace_back("北京队", 4);
    // 初始化球队名称到编号的映射
    std::map<std::string, int> teamNameToId;
    for (const auto &team : teams) {
        teamNameToId[team.name] = team.id;
    }
    // 录入比赛结果
    std::cout << "请输入比赛结果:\n";
    for (int i = 0; i < 2; ++i) {
        std::string homeTeam, awayTeam;
        int homeGoals, awayGoals;
        std::cin >> homeTeam >> awayTeam >> homeGoals >> awayGoals;
        // 生成各球队的比赛数据
        teams[teamNameToId[homeTeam] - 1].addMatchData(1, true, awayTeam, homeGoals, awayGoals,
                                                       homeGoals > awayGoals ? 3 : (homeGoals == awayGoals ? 1 : 0));
        teams[teamNameToId[awayTeam] - 1].addMatchData(1, false, homeTeam, awayGoals, homeGoals,
                                                       awayGoals > homeGoals ? 3 : (awayGoals == homeGoals ? 1 : 0));
    }
    // 显示各球队的比赛数据
    for (const auto &team : teams) {
        team.showMatchData();
    }
    // 显示所有球队截止到本轮的积分
    std::cout << "所有球队截止到本轮的积分:\n";
    for (const auto &team : teams) {
        std::cout << team.name << ' ' << team.points << '\n';
    }
    // 显示某球队的积分
    std::string teamName;
    std::cin >> teamName;
    std::cout << teamName << " 的积分: " << teams[teamNameToId[teamName] - 1].points << '\n';
    // 显示某球队某轮次的比赛数据
    std::cin >> teamName;
    int round;
    std::cin >> round;
    std::cout << teamName << " 第 " << round << " 轮的比赛数据:\n";
    teams[teamNameToId[teamName] - 1].showMatchData();
    // 显示某球队所有在主场失利时的对手
    std::cin >> teamName;
    std::cout << teamName << " 所有在主场失利时的对手:\n";
    teams[teamNameToId[teamName] - 1].showHomeLossOpponents();
    // 显示某球队所有在客场时的比赛数据
    std::cin >> teamName;
    std::cout << teamName << " 所有在客场时的比赛数据:\n";
    for (const auto &data : teams[teamNameToId[teamName] - 1].matchData) {
        if (!data.isHome) {
            std::cout << teamName << '\t' << data.round << '\t' << (data.isHome ? "主" : "客") << '\t' << data.opponent
            << '\t' << data.goalsScored << '\t' << data.goalsConceded << '\t' << data.score << '\t'
            << teams[teamNameToId[teamName] - 1].points << '\n';
        }
    }
    // 对球队排名
    std::cout << "球队排名:\n";
    std::sort(teams.begin(), teams.end(),
    [](const auto &lhs, const auto &rhs) {
        return lhs.points > rhs.points;
    }
    );
    std::cout << "前两名:\n";
    for (int i = 0; i < 2; ++i) {
        std::cout << teams[i].name << '\n';
    }
    std::cout << "最后两名:\n";
    for (int i = 0; i < 2; ++i) {
        std::cout << teams[teams.size() - i - 1].name << '\n';
    }
    // 保存所有球队一个赛季的完整比赛数据
    std::ofstream fout("match_data.txt");
    for (const auto &team : teams) {
        fout << team.id << ' ' << team.name << ' ' << team.points << '\n';
        for (const auto &data : team.matchData) {
            fout << data.round << ' ' << data.isHome << ' ' << data.opponent << ' ' << data.goalsScored << ' '
            << data.goalsConceded << ' ' << data.score << '\n';
        }
    }
    fout.close();
    return 0;
}

https://max.book118.com/html/2021/1211/8100072052004055.shtm

#include<iostream>
#include<iomanip>
#include<string>
#include<fstream>
#include<stdlib.h>
using namespace std;
class Team
{
public:
    Team(char n[15],int s,int w,int d,int l,int g,int lo,int sc):sum(s),win(w),draw(d),lost(l),get(g),lose(lo),score(sc)
    {
        int i;
        for(i=0;i<15;i++)
            name[i]=n[i];
    };
    Team(){};
    int sum,win,draw,lost,get,lose,score;
    char name[15];
    Team operator +(Team &a)
    {
        sum=sum+1;
        get=get+a.get;
        lose=lose+a.lose;
        if(a.get>a.lose)win=win+1;
        else if(a.get==a.lose)draw=draw+1;
        else lost=lost+1;
        score=win*3+draw;
        return *this;
    };
    void Dispaly()
    {
        cout<<setw(15)<<name<<setw(10)<<sum<<setw(10)<<win<<setw(10)<<draw<<setw(10)<<lost<<setw(10)<<get<<setw(10)<<lose<<setw(10)<<score<<endl;
    };
};
void Change(Team &a,Team &b)
{
    Team c;
    c=a;
    a=b;
    b=c;
};
void main()
{
    cout<<endl<<endl<<endl;
    cout<<"□□□□□　　□□□　　　□□□　　□□□□□　□□□□　　　　□　　　□□□　　　□□□　　　"<<endl;
    cout<<"　□　　□　□　　　□　□　　　□　□　□　□　　□　　□　　　□　　　　□　　　　　□　　　　"<<endl;
    cout<<"　□　□　　□　　　□　□　　　□　　　□　　　　□　　□　　　□□　　　□　　　　　□　　　　"<<endl;
    cout<<"　□□□　　□　　　□　□　　　□　　　□　　　　□□□　　　□　□　　　□　　　　　□　　　　"<<endl;
    cout<<"　□　□　　□　　　□　□　　　□　　　□　　　　□　　□　　□　□　　　□　　　　　□　　　　"<<endl;
    cout<<"　□　　　　□　　　□　□　　　□　　　□　　　　□　　□　　□□□□　　□　　　　　□　　　　"<<endl;
    cout<<"　□　　　　□　　　□　□　　　□　　　□　　　　□　　□　　□　　□　　□　　　□　□　　　□"<<endl;
    cout<<"□□□　　　　□□□　　　□□□　　　□□□　　□□□□　　□□　　□□□□□□□□□□□□□□"<<endl;
    cout<<endl<<"目前比赛的排名为："<<endl<<endl;;
    cout<<setw(5)<<"名次"<<setw(15)<<"队名"<<setw(10)<<"比赛场数"<<setw(10)<<"胜场"<<setw(10)<<"平局"<<setw(10)<<"败场"<<setw(10)<<"进球"<<setw(10)<<"输球"<<setw(10)<<"总分"<<endl;
    ifstream in("score.txt");                
    if(!in)
    {
        cout<<"Unable to open in";
        exit(1);           
    }    
    char name[15],a[3];
    int sum,win,draw,lost,get,lose,score;
    int i,j;
    Team team[10];
    for(i=0;i<10;i++)
    {   
        in.get(a,2,' ');
        in.getline(name,15);
        in.clear();
        in.get(a,4);sum=atoi(a);
        in.get(a,4);win=atoi(a);
        in.get(a,4);draw=atoi(a);
        in.get(a,4);lost=atoi(a);
        in.get(a,4);get=atoi(a);
        in.get(a,4);lose=atoi(a);
        in.get(a,4);score=atoi(a);
        Team t(name,sum,win,draw,lost,get,lose,score);
        team[i]=t;
    }
    in.close;
    for(i=0;i<9;i++)
        for(j=i+1;j<10;j++)
            if(team[i].score<team[j].score)
            Change(team[i],team[j]);
    for(i=0;i<10;i++)
    {
        cout<<setw(5)<<i+1;
        team[i].Dispaly();
    }
    while(1)
    {   cout<<endl<<"请输入新一轮的比赛结果："<<endl<<endl;
        char name1[15],name2[15];
        int get1,get2;
        cin>>name1>>name2>>get1>>get2;
        Team team1(name1,0,0,0,0,get1,get2,0);
        Team team2(name2,0,0,0,0,get2,get1,0);
        int t1=0,t2=0;
        int longth1=strlen(name1),longth2=strlen(name2);
        for(i=0;i<10;i++)
        {
            if(team[i].name[13]==team1.name[longth1-1]&&team[i].name[12]==team1.name[longth1-2]&&team[i].name[11]==team1.name[longth1-3]) t1=i;
            if(team[i].name[13]==team2.name[longth2-1]&&team[i].name[12]==team2.name[longth2-2]&&team[i].name[11]==team2.name[longth2-3]) t2=i;
        }
        team[t1]=team[t1]+team1;
        team[t2]=team[t2]+team2;
        for(i=0;i<9;i++)
            for(j=i+1;j<10;j++)
                if(team[i].score<team[j].score)
                Change(team[i],team[j]);
        cout<<endl<<"目前比赛的排名为："<<endl<<endl;;
        cout<<setw(5)<<"名次"<<setw(15)<<"队名"<<setw(10)<<"比赛场数"<<setw(10)<<"胜场"<<setw(10)<<"平局"<<setw(10)<<"败场"<<setw(10)<<"进球"<<setw(10)<<"输球"<<setw(10)<<"总分"<<endl;
        for(i=0;i<10;i++)
        {
            cout<<setw(5)<<i+1;
            team[i].Dispaly();
        }   
        ofstream out("score.txt");
        if(!out)
        {
            cout<<"Unable to open out";
         exit(1);            
        }
        for(i=0;i<10;i++)
        {
            out<<setw(15)<<team[i].name<<setw(10)<<team[i].sum<<setw(10)<<team[i].win<<setw(10)<<team[i].draw<<setw(10)<<team[i].lost<<setw(10)<<team[i].get<<setw(10)<<team[i].lose<<setw(10)<<team[i].score<<endl;
        }
        out.close;
    }
} 

不是很难的，参考下吧
C++课程设计---足球联赛积分 - 百度文库

发你的链接，你没看吗