足球联赛管理系统，c++写

Question

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。

Answer 1

#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;
}