{"blocks":[{"type":"paragraph","data":{"text":"В современном мире эффективным способом проверки знаний считается тестирование. Тесты применяются практически во всех сферах: аттестация, образование, сертификация, психология, подбор персонала и т.д. Тестирование позволяет за короткий срок проверить знания человека и оценить его. Чтобы автоматизировать тестирование, разработчики создают специальное программное обеспечение."}},{"type":"header2","data":{"level":2,"text":"Подготовительная работа"}},{"type":"paragraph","data":{"text":"Для написания прототипа простого приложения для тестирования на языке программирования С++ мы создадим два текстовых файла."}},{"type":"paragraph","data":{"text":"В файл под именем test.txt запишем вопросы к тесту. Каждый вопрос в файле находится на двух строчках и состоит из вопроса и вариантов ответа."}},{"type":"paragraph","data":{"text":"При сохранении файла, выбираем пункт меню — Cохранить как, и устанавливаем кодировку символов ANSI для корректного отображения текста в консоли."}},{"type":"image","data":{"file":{"id":232683,"url":"https://media.tproger.ru/uploads/2022/11/c1a77383-5954-4e91-88ad-eaf683b2ead2.jpg"},"alt":"","title":"","caption":"","stretched":false,"withBackground":false,"withBorder":false,"width":544,"height":340,"optimizedFile":{"original":"https://media.tproger.ru/uploads/2022/11/c1a77383-5954-4e91-88ad-eaf683b2ead2.jpg","alt":"Пишем программу для тестирования на С++ 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консоли."}},{"type":"image","data":{"file":{"id":232685,"url":"https://media.tproger.ru/uploads/2022/11/7f4f8371-d565-40ee-920e-920347c8c921.jpg"},"alt":"","title":"","caption":"","stretched":false,"withBackground":false,"withBorder":false,"width":305,"height":215,"optimizedFile":{"original":"https://media.tproger.ru/uploads/2022/11/7f4f8371-d565-40ee-920e-920347c8c921.jpg","alt":"Пишем программу для тестирования на С++ 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Команда using namespace std сообщает компилятору, что мы хотим использовать всё, что находится в пространстве имен std."}},{"type":"header2","data":{"level":2,"text":"Функция void test()"}},{"type":"image","data":{"file":{"id":232691,"url":"https://media.tproger.ru/uploads/2022/11/f188d5c1-c220-4b8a-9bfc-e1c016c716eb.jpg"},"alt":"","title":"","caption":"","stretched":false,"withBackground":false,"withBorder":false,"width":731,"height":772,"optimizedFile":{"original":"https://media.tproger.ru/uploads/2022/11/f188d5c1-c220-4b8a-9bfc-e1c016c716eb.jpg","alt":"Пишем программу для тестирования на С++ 6","dimensions":{"width":731,"height":772},"additionalSizes":{"srcSet":[{"url":"https://tproger.ru/signed_image/I9Vj5597eORkHBnOgq4Dynq0miqlsoU95E-hY7DOZfg/rs:fill:731:0:true/cb:vimg_2/f:webp/aHR0cHM6Ly9tZWRpYS50cHJvZ2VyLnJ1L3VwbG9hZHMvMjAyMi8xMS9mMTg4ZDVjMS1jMjIwLTRiOGEtOWJmYy1lMWMwMTZjNzE2ZWIuanBn","dpr":1,"width":731},{"url":"https://tproger.ru/signed_image/Iq6jEyj6TEhKjs9DcmMIpQ9wG-A2o6C_r_ox-q_VD8M/rs:fill:1462:0:true/cb:vimg_2/f:webp/aHR0cHM6Ly9tZWRpYS50cHJvZ2VyLnJ1L3VwbG9hZHMvMjAyMi8xMS9mMTg4ZDVjMS1jMjIwLTRiOGEtOWJmYy1lMWMwMTZjNzE2ZWIuanBn","dpr":1,"width":1462},{"url":"https://tproger.ru/signed_image/C1fJpopE48pxKv_9vDWGpaJG8BF_HJFX0Ox8ZkBABmQ/rs:fill:686:0:true/cb:vimg_2/f:webp/aHR0cHM6Ly9tZWRpYS50cHJvZ2VyLnJ1L3VwbG9hZHMvMjAyMi8xMS9mMTg4ZDVjMS1jMjIwLTRiOGEtOWJmYy1lMWMwMTZjNzE2ZWIuanBn","dpr":1,"width":686},{"url":"https://tproger.ru/signed_image/5N6X1CiForsdSUrdxBPJhHkF6eEzRuOPlAacOYn-OF4/rs:fill:1372:0:true/cb:vimg_2/f:webp/aHR0cHM6Ly9tZWRpYS50cHJvZ2VyLnJ1L3VwbG9hZHMvMjAyMi8xMS9mMTg4ZDVjMS1jMjIwLTRiOGEtOWJmYy1lMWMwMTZjNzE2ZWIuanBn","dpr":1,"width":1372},{"url":"https://tproger.ru/signed_image/htTHuomxfJy9zeh-Wh-v1Fmg8ESIi5Qalou8b8Y55VM/rs:fill:636:0:true/cb:vimg_2/f:webp/aHR0cHM6Ly9tZWRpYS50cHJvZ2VyLnJ1L3VwbG9hZHMvMjAyMi8xMS9mMTg4ZDVjMS1jMjIwLTRiOGEtOWJmYy1lMWMwMTZjNzE2ZWIuanBn","dpr":1,"width":636},{"url":"https://tproger.ru/signed_image/OzVXJOoDSVsyDlulY6X-CzSR843OR1ZEklaMbVSzUiI/rs:fill:1272:0:true/cb:vimg_2/f:webp/aHR0cHM6Ly9tZWRpYS50cHJvZ2VyLnJ1L3VwbG9hZHMvMjAyMi8xMS9mMTg4ZDVjMS1jMjIwLTRiOGEtOWJmYy1lMWMwMTZjNzE2ZWIuanBn","dpr":1,"width":1272},{"url":"https://tproger.ru/signed_image/tjVuNQTcbZYeFHR0qM_nQ4njb8R9vwSCLLsEqrORWWk/rs:fill:466:0:true/cb:vimg_2/f:webp/aHR0cHM6Ly9tZWRpYS50cHJvZ2VyLnJ1L3VwbG9hZHMvMjAyMi8xMS9mMTg4ZDVjMS1jMjIwLTRiOGEtOWJmYy1lMWMwMTZjNzE2ZWIuanBn","dpr":1,"width":466},{"url":"https://tproger.ru/signed_image/II2JICZ7ikmx5-UY38mnMEXfUr0LHCiadtL91l3VWbQ/rs:fill:932:0:true/cb:vimg_2/f:webp/aHR0cHM6Ly9tZWRpYS50cHJvZ2VyLnJ1L3VwbG9hZHMvMjAyMi8xMS9mMTg4ZDVjMS1jMjIwLTRiOGEtOWJmYy1lMWMwMTZjNzE2ZWIuanBn","dpr":1,"width":932}],"sizes":[{"media":"(min-width: 1441px)","size":"731px"},{"media":"(min-width: 1281px)","size":"686px"},{"media":"(min-width: 1281px)","size":"731px"},{"media":"(min-width: 961px)","size":"731px"},{"media":"(min-width: 671px)","size":"636px"},{"media":"(min-width: 500px)","size":"466px"}]}}}},{"type":"paragraph","data":{"text":"Функция void test() читает из файла test.txt вопросы к тесту и выводит их в консоль. Открывает новый файл myanswer.txt и записывает в него ответы пользователя. По окончанию тестирования закрывает оба файла."}},{"type":"paragraph","data":{"text":"ifstream f — объекты класса ifstream предоставляют возможность для чтения файлов."}},{"type":"paragraph","data":{"text":"f.open("test.txt") — с помощью данного объекта, используя метод open, открываем файл test.txt."}},{"type":"paragraph","data":{"text":"ofstream out — объекты класса оfstream позволяют нам открывать файлы для записи данных."}},{"type":"paragraph","data":{"text":"out.open("myanswer.txt") — для открытия файла myanswer.txt используется метод open."}},{"type":"paragraph","data":{"text":"Для работы с прочитанными данными из файла test.txt, используем переменную строкового типа str, ответы пользователя будем сохранять в переменную строкового типа otv."}},{"type":"paragraph","data":{"text":"Каждый вопрос теста нумеруем целочисленной переменной z."}},{"type":"paragraph","data":{"text":"Перед началом работы с данными файлов проверяем, что все рабочие файлы открылись корректно — if (f && out) —, в ином случае выводим сообщение об ошибке и покидаем тело функции:"}},{"type":"paragraph","data":{"text":"cout << «Ошибка открытия файла !!!»;return;"}},{"type":"paragraph","data":{"text":"При каждой итерации цикла while, с помощью функции getline, читаем построчно данные с файла test.txt. Цикл while будет работать, пока не будут прочитаны все строки файла test.txt."}},{"type":"paragraph","data":{"text":"При каждой итерации цикла while в консоль выводится номер вопроса и запрос на ввод ответа."}},{"type":"image","data":{"file":{"id":232692,"url":"https://media.tproger.ru/uploads/2022/11/7902a1a0-4593-4eb5-bace-dcccb51cf271.jpg"},"alt":"","title":"","caption":"","stretched":false,"withBackground":false,"withBorder":false,"width":507,"height":183,"optimizedFile":{"original":"https://media.tproger.ru/uploads/2022/11/7902a1a0-4593-4eb5-bace-dcccb51cf271.jpg","alt":"Пишем программу для тестирования на С++ 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result()"}},{"type":"image","data":{"file":{"id":232694,"url":"https://media.tproger.ru/uploads/2022/11/06813d3c-7366-4364-b824-1eb097729a5a.jpg"},"alt":"","title":"","caption":"","stretched":false,"withBackground":false,"withBorder":false,"width":947,"height":595,"optimizedFile":{"original":"https://media.tproger.ru/uploads/2022/11/06813d3c-7366-4364-b824-1eb097729a5a.jpg","alt":"Пишем программу для тестирования на С++ 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«Ошибка открытия файла !!!»;\r\nreturn;","language":"clike lazy-code"}},{"type":"paragraph","data":{"text":"В параметрах цикла while, используя функцию getline, читаем правильные ответы и ответы пользователя в строковых переменных str и otv."}},{"type":"paragraph","data":{"text":"В конструкции if (str == otv) сравниваем ответы и, если они совпадают, выводим ответ с указанием верного в консоль, а также увеличиваем значение переменной p на единицу, если это не так. Сообщаем, что ответ ошибочный и увеличиваем значение переменной n на единицу."}},{"type":"paragraph","data":{"text":"По окончании работы цикла while не забываем закрыть файлы f1.close(); f2.close();."}},{"type":"paragraph","data":{"text":"В конце работы выводим количество правильных и ошибочных ответов и выходим из тела функции."}},{"type":"image","data":{"file":{"id":232696,"url":"https://media.tproger.ru/uploads/2022/11/7ed0c877-a76b-4f76-84a6-72757e7b886f.jpg"},"alt":"","title":"","caption":"","stretched":false,"withBackground":false,"withBorder":false,"width":782,"height":109,"optimizedFile":{"original":"https://media.tproger.ru/uploads/2022/11/7ed0c877-a76b-4f76-84a6-72757e7b886f.jpg","alt":"Пишем программу для тестирования на С++ 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Устанавливаем паузу в консоли system("pause"), чтобы она не закрывалась, пока не будет нажата любая клавиша. Готово! Скачать код программы можно здесь."}}]}

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