Lab8/Lab2-4.cpp - master - Oppq/Labs

Lab8/Lab2-4.cpp
396 строк13 KB
Oppq
Lab8
21 май 2026, 07:41
21 май 2026, 07:412cd3883
#include <iostream>
#include <cmath>
#include <iomanip>
#include <fstream>
#include <string>
#include <ctime>
#include "json.hpp"

using json = nlohmann::json;

// Лаб2

int main_lab2() {
    int choice;
    float x;
    int n = 0;
    float r;
    float u;
    
    json result;
    result["timestamp"] = time(0);
    
    cout << "Введите x (x > 0): "; cin >> x;
    result["x"] = x;
    
    if (x <= 0) {
        cout << "Значение x не подходит под условие";
        result["error"] = "x <= 0";
        return 1;
    }
    
    cout << "Выберите способ вычисления ln(x):";
    cout << "1 - С заданной погрешностью eps";
    cout << "2 - С заданным числом k первых членов ряда";
    cout << "3 - По аналитической формуле (стандартная функция)";
    cout << "Ваш выбор (1, 2 или 3): "; cin >> choice;
    result["choice"] = choice;
    
    if (choice < 1 || choice > 3) {
        cout << "Данного способа вычисления не существует в алгоритме" << endl;
        result["error"] = "invalid choice";
        return 1;
    }
    
    switch (choice) {
        case 1: {
            float y = 0;
            cout << "Введите погрешность (0 < eps < 1): ";
            float eps; cin >> eps;
            result["eps"] = eps;
            
            if (eps < 0 || eps >= 1) {
                cout << "Погрешность не подходит под условие задачи";
                result["error"] = "invalid eps";
                return 1;
            }
            
            do {
                u = pow(((x - 1) / (x + 1)), 2 * n + 1) / (2 * n + 1);
                y += u;
                n++;
            } while (n < 1000);
            
            r = y * 2;
            result["result"] = r;
            result["method"] = "precision";
            cout << "Итоговая сумма: " << setprecision(10) << r << endl;
            break;
        }
        case 2: {
            cout << "Введите количество членов, count: ";
            int count; cin >> count;
            float y = 0;
            result["count"] = count;
            
            if (count < 0) {
                cout << "count < 0 при заданном условии x";
                result["error"] = "negative count";
                return 1;
            }
            
            for (int n = 0; n < count; n++) {
                float u = pow((x - 1) / (x + 1), 2 * n + 1) / (2 * n + 1);
                y += u;
            }
            
            r = y * 2;
            result["result"] = r;
            result["method"] = "count";
            cout << "Итоговая сумма: " << r << endl;
            break;
        }
        case 3: {
            r = log(x);
            result["result"] = r;
            result["method"] = "standard";
            cout << "Итоговая сумма: " << r << endl;
            break;
        }
    }
    
    ofstream file("lab2_result.json");
    file << result.dump(4);
    file.close();
    cout << "Результат сохранён в lab2_result.json" << endl;
    
    return 0;
}

// Лаб3

struct Club {
    string nameclub;
    string season;
};

struct BD {
    unsigned day, month, year;
};

struct FP {
    unsigned number, goals;
    string name, surname;
    BD birth;
    Club clubs;
};

int main_lab3() {
    json players_json = json::array();
    FP players[5] = {};
    
    for (int i = 0; i < 2; i++) {
        json player_json;
        
        cout << "Игрок № " << i + 1 << "\n";
        cout << "Кол-во голов: "; cin >> players[i].goals;
        player_json["goals"] = players[i].goals;
        
        cout << "Имя игрока: "; cin >> players[i].name;
        player_json["name"] = players[i].name;
        
        cout << "Фамилия игрока: "; cin >> players[i].surname;
        player_json["surname"] = players[i].surname;
        
        cout << "День рождения (через Enter): ";
        cin >> players[i].birth.day >> players[i].birth.month >> players[i].birth.year;
        player_json["birth"]["day"] = players[i].birth.day;
        player_json["birth"]["month"] = players[i].birth.month;
        player_json["birth"]["year"] = players[i].birth.year;
        
        if (players[i].birth.day < 1 || players[i].birth.day > 31) {
            cout << "Некорректное число дня"; return 1;
        }
        if (players[i].birth.month < 1 || players[i].birth.month > 12) {
            cout << "Некорректное число месяца"; return 1;
        }
        if (players[i].birth.year < 1990 || players[i].birth.year > 2025) {
            cout << "Некорректное число года"; return 1;
        }
        
        cout << "Клуб: "; cin >> players[i].clubs.nameclub;
        player_json["club"]["name"] = players[i].clubs.nameclub;
        
        cout << "Сезон: "; cin >> players[i].clubs.season;
        player_json["club"]["season"] = players[i].clubs.season;
        
        players_json.push_back(player_json);
    }
    
    players[2] = {10, 800, "Месси", "Лионель", {24, 6, 1987}, {"Барселона", "2004-2005"}};
    players[3] = {7, 750, "Роналду", "Криштиану", {5, 2, 1985}, {"Реал Мадрид", "2010-2011"}};
    players[4] = {11, 600, "Неймар", "Сантос", {5, 2, 1992}, {"ПСЖ", "2021-2022"}};
    
    json messi;
    messi["number"] = 10; messi["goals"] = 800;
    messi["name"] = "Месси"; messi["surname"] = "Лионель";
    messi["birth"]["day"] = 24; messi["birth"]["month"] = 6; messi["birth"]["year"] = 1987;
    messi["club"]["name"] = "Барселона"; messi["club"]["season"] = "2004-2005";
    players_json.push_back(messi);
    
    json ronaldo;
    ronaldo["number"] = 7; ronaldo["goals"] = 750;
    ronaldo["name"] = "Роналду"; ronaldo["surname"] = "Криштиану";
    ronaldo["birth"]["day"] = 5; ronaldo["birth"]["month"] = 2; ronaldo["birth"]["year"] = 1985;
    ronaldo["club"]["name"] = "Реал Мадрид"; ronaldo["club"]["season"] = "2010-2011";
    players_json.push_back(ronaldo);
    
    json neymar;
    neymar["number"] = 11; neymar["goals"] = 600;
    neymar["name"] = "Неймар"; neymar["surname"] = "Сантос";
    neymar["birth"]["day"] = 5; neymar["birth"]["month"] = 2; neymar["birth"]["year"] = 1992;
    neymar["club"]["name"] = "ПСЖ"; neymar["club"]["season"] = "2021-2022";
    players_json.push_back(neymar);
    
    cout << "Футбольный клуб:\n";
    
    for (int i = 0; i < 5; i++) {
        cout << players[i].name << " " << players[i].surname
             << " - " << players[i].goals << " голов, "
             << players[i].birth.day << "." << players[i].birth.month << "." << players[i].birth.year
             << ", " << players[i].clubs.nameclub << " (" << players[i].clubs.season << ")\n";
    }
    
    ofstream file("lab3_players.json");
    file << players_json.dump(4);
    file.close();
    cout << "Данные сохранены в lab3_players.json" << endl;
    
    return 0;
}

//Лаб4

struct Club4 {
    string nameclub;
    string season;
};

struct BD4 {
    unsigned day, month, year;
};

struct FP4 {
    unsigned number, goals;
    string name, surname;
    BD4 birth;
    Club4 clubs;
};

json all_players = json::array();

void vvo(FP4& igr, int nom) {
    json j;
    
    cout << "\nИгрок № " << nom << "\n";
    cout << "Имя: "; cin >> igr.name;
    j["name"] = igr.name;
    
    cout << "Фамилия: "; cin >> igr.surname;
    j["surname"] = igr.surname;
    
    cout << "Номер: "; cin >> igr.number;
    j["number"] = igr.number;
    
    cout << "Голы: "; cin >> igr.goals;
    j["goals"] = igr.goals;
    
    cout << "Дата (д м г): ";
    cin >> igr.birth.day >> igr.birth.month >> igr.birth.year;
    j["birth"]["day"] = igr.birth.day;
    j["birth"]["month"] = igr.birth.month;
    j["birth"]["year"] = igr.birth.year;
    
    cout << "Клуб: "; cin >> igr.clubs.nameclub;
    j["club"]["name"] = igr.clubs.nameclub;
    
    cout << "Сезон: "; cin >> igr.clubs.season;
    j["club"]["season"] = igr.clubs.season;
    
    all_players.push_back(j);
}

void pok(FP4 igr) {
    cout << igr.name << " " << igr.surname
         << " (#" << igr.number << ") - " << igr.goals << " голов, "
         << igr.birth.day << "." << igr.birth.month << "." << igr.birth.year
         << ", " << igr.clubs.nameclub << " (" << igr.clubs.season << ")\n";
}

void zap(FP4 igr[]) {
    igr[2].number = 10; igr[2].goals = 800;
    igr[2].name = "Месси"; igr[2].surname = "Лионель";
    igr[2].birth.day = 24; igr[2].birth.month = 6; igr[2].birth.year = 1987;
    igr[2].clubs.nameclub = "Барселона"; igr[2].clubs.season = "2004-2005";
    
    json messi;
    messi["number"] = 10; messi["goals"] = 800;
    messi["name"] = "Месси"; messi["surname"] = "Лионель";
    messi["birth"]["day"] = 24; messi["birth"]["month"] = 6; messi["birth"]["year"] = 1987;
    messi["club"]["name"] = "Барселона"; messi["club"]["season"] = "2004-2005";
    all_players.push_back(messi);
    
    igr[3].number = 7; igr[3].goals = 750;
    igr[3].name = "Роналду"; igr[3].surname = "Криштиану";
    igr[3].birth.day = 5; igr[3].birth.month = 2; igr[3].birth.year = 1985;
    igr[3].clubs.nameclub = "Реал Мадрид"; igr[3].clubs.season = "2010-2011";
    
    json ronaldo;
    ronaldo["number"] = 7; ronaldo["goals"] = 750;
    ronaldo["name"] = "Роналду"; ronaldo["surname"] = "Криштиану";
    ronaldo["birth"]["day"] = 5; ronaldo["birth"]["month"] = 2; ronaldo["birth"]["year"] = 1985;
    ronaldo["club"]["name"] = "Реал Мадрид"; ronaldo["club"]["season"] = "2010-2011";
    all_players.push_back(ronaldo);
    
    igr[4].number = 11; igr[4].goals = 600;
    igr[4].name = "Неймар"; igr[4].surname = "Сантос";
    igr[4].birth.day = 5; igr[4].birth.month = 2; igr[4].birth.year = 1992;
    igr[4].clubs.nameclub = "ПСЖ"; igr[4].clubs.season = "2021-2022";
    
    json neymar;
    neymar["number"] = 11; neymar["goals"] = 600;
    neymar["name"] = "Неймар"; neymar["surname"] = "Сантос";
    neymar["birth"]["day"] = 5; neymar["birth"]["month"] = 2; neymar["birth"]["year"] = 1992;
    neymar["club"]["name"] = "ПСЖ"; neymar["club"]["season"] = "2021-2022";
    all_players.push_back(neymar);
}

bool pro(FP4 igr) {
    if (igr.birth.day < 1 || igr.birth.day > 31) {
        cout << "Ошибка: день от 1 до 31\n";
        return false;
    }
    return true;
}

int main_lab4() {
    FP4 igr[5];
    all_players = json::array();
    
    for (int i = 0; i < 2; i++) {
        vvo(igr[i], i + 1);
        if (!pro(igr[i])) return 1;
    }
    
    zap(igr);
    
    for (int i = 0; i < 5; i++) {
        cout << i + 1 << ". ";
        pok(igr[i]);
    }
    
    ofstream file("lab4_players.json");
    file << all_players.dump(4);
    file.close();
    cout << "Данные сохранены в lab4_players.json" << endl;
    
    return 0;
}

// Лаб4 Рекурсия

bool check(int& s) {
    char c;
    cin.get(c);
    
    if (c == ' ') { return true; }
    if (c < '0' || c > '9') { return false; }
    
    s = s + (c - '0');
    return check(s);
}

int main_lab4_recursive() {
    json result;
    
    cout << "Введите число (окончите пробелом): ";
    
    int s = 0;
    cin >> ws;
    
    if (check(s) && s > 0 && s % 3 == 0) {
        cout << "YES";
        result["result"] = "YES";
    } else {
        cout << "NO";
        result["result"] = "NO";
    }
    result["sum"] = s;
    cout << endl;
    
    ofstream file("lab4_recursive_result.json");
    file << result.dump(4);
    file.close();
    cout << "Результат сохранён в lab4_recursive_result.json" << endl;
    
    cin.ignore(1000, '\n');
    return 0;
}

// Главная функция

int main() {
    cout << "\nЛаб2\n";
    main_lab2();
    
    cout << "\nЛаб3\n";
    main_lab3();
    
    cout << "\nЛаб4\n";
    main_lab4();
    
    cout << "\nЛаб4Рекурсия (второе задание)\n";
    main_lab4_recursive();
    
    return 0;
}