{"id":12526,"date":"2019-12-17T12:21:57","date_gmt":"2019-12-17T06:51:57","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=12526"},"modified":"2021-07-02T15:36:32","modified_gmt":"2021-07-02T10:06:32","slug":"2nd-puc-computer-science-question-bank-chapter-12","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/2nd-puc-computer-science-question-bank-chapter-12\/","title":{"rendered":"2nd PUC Computer Science Question Bank Chapter 12 Data File Handling"},"content":{"rendered":"

You can Download Chapter 12 Data File Handling Questions and Answers, Notes, 2nd PUC Computer Science Question Bank with Answers<\/a> Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations.<\/p>\n

Karnataka 2nd PUC Computer Science Question Bank Chapter 12 Data File Handling<\/h2>\n

2nd PUC Computer Science Data File Handling One Mark Questions and Answers<\/h3>\n

Question 1.
\nWhich header file is required for file handling functions in C++?
\nAnswer:
\nThe header file required for file handling functions in C++ is <fstream.h><\/p>\n

Question 2.
\nWhat is stream?
\nAnswer:
\nA stream is a sequence of characters that move from the source to the destination.<\/p>\n

Question 3.
\nName the streams generally used for file I\/O.
\nAnswer:
\nThe streams generally used for file I\/O is input stream, output stream, and error stream.<\/p>\n

Question 4.
\nWhat are output streams?
\nAnswer:
\nA sequence of characters that move from computer to an output device like monitor.<\/p>\n

\"KSEEB<\/p>\n

Question 5.
\nWhat are input streams?
\nAnswer:
\nA sequence of characters that move from input device like keyboard to the computer.<\/p>\n

Question 6.
\nMention the methods of opening files within C++ program.
\nAnswer:
\nThe methods of opening file within C++ program<\/p>\n

    \n
  • Opening a file using constructor<\/li>\n
  • Opening a file using member function open()<\/li>\n<\/ul>\n

    Question 7.
    \nWrite the member functions belonging to fstream class.
    \nAnswer:
    \nThe member function belonging to fstream class is open() with default input mode.<\/p>\n

    Question 8.
    \nWhat is ifstream class?
    \nAnswer:
    \nThis class supports input operations on files and is derived from istream class.<\/p>\n

    Question 9.
    \nWhat is ofstream class?
    \nAnswer:
    \nThis class supports output operations on files and is derived from ostream class.<\/p>\n

    Question 10.
    \nWrite the member functions belonging to ofstream class.
    \nAnswer:
    \nThe member functions belonging to ofstream class are open () with default output mode and inherits put(), write(), tellp() and seekp() from ostream.<\/p>\n

    Question 11.
    \nWrite the member functions belonging to ifstream class.
    \nAnswer:
    \nThe member functions belonging to ifstream class are open() with defauit input mode and inherits get(), getiine(), read(), seekg() and tellg() from istream.<\/p>\n

    \"KSEEB<\/p>\n

    Question 12.
    \nName the stream classes supported by C++ for file input.
    \nAnswer:
    \nThe stream classes supported by C++ for file input are istream and ifstream.<\/p>\n

    Question 13.
    \nName the stream classes supported by C++ for output.
    \nAnswer:
    \nThe stream classes supported by C++ for output are ostream and ofstream.<\/p>\n

    Question 14.
    \nMention the file modes.
    \nAnswer:
    \nThe various file modes are ios::app, ios::ate, ios::binary, ios::in, ios:out etc.,<\/p>\n

    Question 15.
    \nWhat is ios::in?
    \nAnswer:
    \nThe ios::in is a file mode that open the file in read-only mode.<\/p>\n

    Question 16.
    \nWhat is ios::out?
    \nAnswer:
    \nThe ios::out is a file mode that open file for write-only mode.<\/p>\n

    Question 17.
    \nMention the types of files.
    \nAnswer:
    \nThe different types of files are binary files and text files.<\/p>\n

    Question 18.
    \nWhat is text file?
    \nAnswer:
    \nA text file that stores information in ASCII characters.<\/p>\n

    \"KSEEB<\/p>\n

    Question 19.
    \nWhat is binary file?
    \nAnswer:
    \nA binary file that contains information in the format as it is held in memory.<\/p>\n

    Question 20.
    \nWhat is the use of write() function?
    \nAnswer:
    \nThe use of write() function is to write binary data to a file.<\/p>\n

    Question 21.
    \nWhat is the use of writeln() function?
    \nAnswer:
    \nWrong question<\/p>\n

    Question 22.
    \nWhat is the use of get() function?
    \nAnswer:
    \nThe get () function is used read a single character from the associated stream.<\/p>\n

    Question 23.
    \nWhat is the use of put() function?
    \nAnswer:
    \nThe put() function is used to write a single character to the associated stream.<\/p>\n

    Question 24.
    \nWhat is the use of getline() function?
    \nAnswer:
    \nThe use of getline() function is to read a whole line of text.<\/p>\n

    \"KSEEB<\/p>\n

    Question 25.
    \nWhat is the use of read() function?
    \nAnswer:
    \nThe use of read() function is to read binary data from a file.<\/p>\n

    Question 26.
    \nWhat is the use of seekp () function?
    \nAnswer:
    \nThe use of seekp() function to move the put pointer to a specified location from the beginning of a file.<\/p>\n

    Question 27.
    \nWhat is the use of seekg() function?
    \nAnswer:
    \nThe use of seekg() function to move the get pointer to a specified location from the beginning of file.<\/p>\n

    Question 28.
    \nWhat is the use of eof() function?
    \nAnswer:
    \nThe use of eof() function helps in detecting the end of file.<\/p>\n

    Question 29.
    \nWhat is error handling function?
    \nAnswer:
    \nEach bit such as eofbit, badbit, etc., are associated with the function that handles appropriate errors. Such function are called error handling functions. For example, eof() function.<\/p>\n

    2nd PUC Computer Science Data File Handling Two Mark Questions and Answers<\/h3>\n

    Question 1.
    \nWhat is stream? Name the stream generally used for file I\/O.
    \nAnswer:
    \nA stream is a sequence of characters that move from the source to the destination. The streams generally used for file I\/O is input stream, output stream, and error stream.<\/p>\n

    Question 2.
    \nWhat are input and output streams?
    \nAnswer:
    \nThe input streams are sequence of characters that move from input devices like a keyboard to the program\/computer.
    \nThe output streams are sequence of characters that move from program\/computer to an output device like a monitor.<\/p>\n

    \"KSEEB<\/p>\n

    Question 3.
    \nMention the methods of opening file within C++. Discuss anyone.
    \nAnswer:
    \nThe methods of opening file within C++ program<\/p>\n

      \n
    • Opening a file using constructor<\/li>\n
    • Opening a file using member function open() of the class Opening a file using constructor:<\/li>\n<\/ul>\n

      The syntax for opening file for output purpose only is ofstream obj(“filename”);
      \nExample:
      \nofstream fout(“results.dat”);<\/p>\n

      Question 4.
      \nWrite the member functions belonging to fstream class.
      \nAnswer:
      \nThe member functions belonging to fstream class are constructor, open, is_open, close, and inherits get(), getline(), read(), seekg() and tellg() from istream, inherits put(), write() seekp() and tellp() from ostream.<\/p>\n

      Question 5.
      \nDifferentiate between ifstream class and ofstream class.
      \nAnswer:
      \nThe ifstream class supports input operations on file whereas ofstream class supports output operations on files.<\/p>\n

      \"KSEEB<\/p>\n

      Question 6.
      \nDifferentiate between read() and write ().
      \nAnswer:
      \nThe read() member function belongs to the class ifstream and used to read binary data from a file whereas write () member function belongs to the class ofstream and is used to write binary data to a file.<\/p>\n

      Question 7.
      \nDifferentiate between get() and getline().
      \nAnswer:
      \nThe get() member function belongs to the class ifstream and is used to read a single character from the associated stream whereas getline () function is a string I\/O function that is used to read a whole line of text on text files.<\/p>\n

      Question 8.
      \nWrite the member functions belonging to ofstream class.
      \nAnswer:
      \nThe member functions belonging to ofstream class are open() with default output mode and inherits put(), write(), seekp() and tellp() from ostream.<\/p>\n

      Question 9.
      \nWrit.e the member functions belonging to ifstream class.
      \nAnswer:
      \nhe member functions belonging to ifstream class are open() with default input mode and inherits get(), getline(), read(), seekg() and tellg() from istream.<\/p>\n

      \"KSEEB<\/p>\n

      Question 10.
      \nName the stream classes supported by C++ for file input and output.
      \nAnswer:
      \nThe stream classes supported by C++ for file input and output are fstreambase, ifstream, ofstream, fstream, and filebuf.<\/p>\n

      Question 11.
      \nWhat are the advantages of saving data in binary form?
      \nAnswer:
      \nThe records in the database usually contain different data types. In such areas saving data in binary form helps to optimize storage space and file I\/O would be faster when compared to text files.<\/p>\n

      2nd PUC Computer Science Data File Handling Three Mark Questions and Answers<\/h3>\n

      Question 1.
      \nMention the methods of opening file within C++ program. Discuss.
      \nAnswer:
      \nThe methods of opening file within C++ program<\/p>\n

        \n
      • Opening a file using constructor<\/li>\n
      • Opening a file using member function open() of the class<\/li>\n<\/ul>\n

        Opening a file using constructor:
        \nThe syntax for opening file for output purpose only is ofstream obj(“filename”);
        \nwhere ofstream is a class and obj is a object of type ofstream and “filename” is any valid name of a file to be opened for output purpose only.<\/p>\n

        Opening file using open():
        \nThe syntax for opening file for output purpose only ofstream object.oper>(“filename”);
        \nwhere ofstream is a class and object is of ofstream class type and filename is any. valid file to be opened for output purpose only.<\/p>\n

        Question 2.
        \nDifferentiate between ifstream class and ofstream class.
        \nAnswer:<\/p>\n

          \n
        • The ifstream class supports input operations whereas ofstream class supports output operations on file.<\/li>\n
        • The ifstream class inherits functions from istream whereas ofstream class inherits functions from ostream.<\/li>\n
        • The inherited member functions of ifstream are get(), getline(), read(), seekg() and tellg() whereas ofstream member function are put(), write(), seekp() and tellp().<\/li>\n<\/ul>\n

          Question 3.
          \nDifferentiate between read() and write ().
          \nAnswer:<\/p>\n\n\n\n\n\n\n
          read()<\/td>\nwrite()<\/td>\n<\/tr>\n
          belongs to the class ifstream<\/td>\nbelongs to the class ofstream<\/td>\n<\/tr>\n
          used to read binary data from a file<\/td>\nused to write binary data to a file<\/td>\n<\/tr>\n
          Syntax: fin.read( (char *) &variable, sizeof(variable));<\/td>\nSyntax: fout.write( (char *) &variable, sizeof(variable));<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Question 4.
          \nDifferentiate between get() and getline().
          \nAnswer:<\/p>\n\n\n\n\n\n\n
          \n

          get()<\/p>\n<\/td>\n

          		\n

          getline()<\/p>\n<\/td>\n<\/tr>\n

          belongs to the class ifstream<\/td>\nbelongs to the class ifstream<\/td>\n<\/tr>\n
          to read a single character from the associated stream<\/td>\na string I\/O function that is used to read a whole line of text to text files<\/td>\n<\/tr>\n
          Syntax: ifstream object.get(char);<\/td>\nSyntax: fin.getline(buffer, SIZE);<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Question 5.
          \nName the stream classes supported by C++ for file input and output.
          \nAnswer:
          \nThe stream classes supported by C++ for file input and output<\/p>\n

            \n
          • fstreambase class provides facilities for file operations.<\/li>\n
          • Ifstream class supports read operations and consists of open () with default input mode.<\/li>\n
          • ofstream class supports output operations and consists of open() with default output mode.<\/li>\n
          • fstream() class supports both input and output operations. It contains open() with default input mode.<\/li>\n
          • filebuf class sets the file buffer to read and write.<\/li>\n<\/ul>\n

            \"KSEEB<\/p>\n

            Question 6.
            \nMention the types of file. Explain any one.
            \nAnswer:
            \nThe text file and binary file are the two types of files in C++.
            \nText file:
            \nA text file also called as ASCII file is a stream of characters that can be sequentially processed in a forward direction by the computer. In text files, each line of text end with a EOL (End of line) character and each file ends with a special character called the EOF (End of file). The file can be edited using text editors like C++ editor, notepad, vi editor in UNIX.<\/p>\n

            Question 7.
            \nWhat are the advantages of saving data in binary form and text form?
            \nAnswer:
            \nThe advantages of saving data in binary form (any three):<\/p>\n

              \n
            • Stores the data in binary form<\/li>\n
            • Files can be either processed sequentially or randomly<\/li>\n
            • No delimiters are used for a line<\/li>\n
            • No internal translation takes place<\/li>\n
            • It takes less space to store data. For example, the integer 4564 occupies 2 bytes in memory.<\/li>\n<\/ul>\n

              The advantages of saving data in text form (any three):<\/p>\n

                \n
              • Stores the data in ASCII characters<\/li>\n
              • Files processed sequentially in the forward direction<\/li>\n
              • Delimiter EOL is used for End of line and EOF is used to mark the end of file<\/li>\n
              • Internal translation takes place during EOL and EOF<\/li>\n
              • It takes more space to store data. For example, the integer 4564 occupies 4 bytes in memory.<\/li>\n<\/ul>\n

                2nd PUC Computer Science Data File Handling Five Mark Questions and Answers<\/h3>\n

                Question 1.
                \nWhat are input and output streams?
                \nAnswer:
                \nThe input streams are sequence of characters that move from input device like keyboard to the program\/computer. The output streams are sequence of characters that move from program\/computer to an output device like monitor.<\/p>\n

                The stream classes supported by C++ for file input and output
                \n1. fstreambase:
                \nclass provides facilities for file operations and consists of open() and close() member functions. This is base class for fstream, ifstream and ofstream.<\/p>\n

                2. Ifstream:
                \nclass supports read operations and consists of open () with default input mode and inherits function get(), getline, read() , seekg(), tellg() from istream class defined inside iostream.h file.<\/p>\n

                3. ofstream:
                \nclass supports output operations and consists of open() with default output mode. It inherits the function put(), write(), seekp() and tellp() from ostream.<\/p>\n

                4. fstream():
                \nclass supports both input and output operations. It contains open() with default input mode and inherits all the functions from istream and ostream classes through iostream. filebuf class sets the file buffer to read and write.<\/p>\n

                \"KSEEB<\/p>\n

                Question 2.
                \nWhat is the significance of fstream.h header file?
                \nAnswer:
                \nThe fstream.h header predefines a set or operations for handling files related to input and output. It defines certain classes that help to perform file input and output. For example, ifstream class links a file to the program for input and ofstream class links a file to the program for output and fstream classifies a file to the program for both input and output.<\/p>\n

                The file operations make use of streams as an interface between the programs and the files, A stream is a sequence of bytes and general name given to flow of data. Input stream and output stream represent different kind of data flow into the memory or out of the memory. The C++ provides ofstream class to write on files, ifstream class to read from files and fstream class to both read and write from\/to file.<\/p>\n

                These classes are derived from fstreambase and from those declared in the header file ” iostream.h”. The classes ofstream, ifstream, and fstream are designed exclusively to manage the disk files and their declaration are present in the header file “fstream.h”. To make use of these classes, fstream.h is included in all the programs which handle disk files.<\/p>\n

                Question 3.
                \nMention the methods of opening file within C++. Discuss.
                \nAnswer:
                \nThe methods of opening file within C++ program<\/p>\n

                  \n
                • Opening a file using constructor<\/li>\n
                • Opening a file using member function open() of the class.<\/li>\n<\/ul>\n

                  Opening a file using constructor:
                  \nThe syntax for opening file for output purpose only is<\/p>\n

                  ofstream obj(“filename”);<\/p>\n

                  where ofstream is a class and obj is a object of type ofstream and “filename” is any valid name of a file to be opened for output purpose only.
                  \nExample:<\/p>\n

                  ofstream fout(“results.dat”);<\/p>\n

                  Opening file using open():
                  \nThe syntax for opening file for output purpose only<\/p>\n

                  ofstream object.open(“filename”);<\/p>\n

                  where ofstream is a class and object is of ofstream class type and filename is any valid file to be opened for output purpose only.
                  \nExample:<\/p>\n

                  ofstream obj;
                  \nobj.open(“text.dat”);<\/p>\n

                  Question 4.
                  \nDifferential between ifstream class and ofstream class.
                  \nAnswer:<\/p>\n

                    \n
                  • The ifstream class supports input operations whereas ofstream class supports output operations on file.<\/li>\n
                  • The ifstream class inherits functions from istream whereas ofstream class inherits functions from ostream.<\/li>\n
                  • The inherited member functions of ifstream are get(), getline(), read(), seekg() and tellg() whereas ofstream member function are put(), write(), seekp() and tellp().<\/li>\n<\/ul>\n

                    Question 5.
                    \nDifferentiate between read() and write() with example.
                    \nAnswer:<\/p>\n\n\n\n\n\n\n\n
                    read()<\/td>\nwrite()<\/td>\n<\/tr>\n
                    belongs to the class ifstream<\/td>\nbelongs to the class ofstream<\/td>\n<\/tr>\n
                    used to read binary data from a file<\/td>\nused to write binary data to a file<\/td>\n<\/tr>\n
                    Syntax: fin.read( (char *) &variable, sizeof(variable));<\/td>\nSyntax: fout.write( (char *) &variable, sizeof(variable));<\/td>\n<\/tr>\n
                    Example: fin.read( (char *) &s, sizeof(s));<\/td>\nExample: fout.write ((char *) &s, sizeof(s));<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                    Question 6.
                    \nDifferentiate between get() and getline() with exmaple.
                    \nAnswer:<\/p>\n\n\n\n\n\n\n\n
                    \n

                    get()<\/p>\n<\/td>\n

                    		\n

                    getline()<\/p>\n<\/td>\n<\/tr>\n

                    belongs to the class ifstream<\/td>\nbelongs to the class ifstream<\/td>\n<\/tr>\n
                    to read a single character from the associated stream<\/td>\na string I\/O function that is used to read a whole line of text to text files<\/td>\n<\/tr>\n
                    Syntax: ifstream object.get(char);<\/td>\nSyntax: fin.getline(buffer, SIZE);<\/td>\n<\/tr>\n
                    Example: fin.get(ch);<\/td>\nExample: fin.getline(book, SIZE);<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                    \"KSEEB<\/p>\n

                    Question 7.
                    \nExplain any three file modes.
                    \nAnswer:
                    \nThe file can be opened both for input and output operations using fstream class.
                    \nThe syntax for opening a file with constructor is fstream object(“filename”, mode);
                    \nThe syntax for opening a file with open() is fstream object.open(“filename”, mode);
                    \nTherefore, file can be opened using different modes. They are
                    \nios::in opens file for reading only. For example, fstream fin(“te’xt.dat”, ios::in);
                    \nios::out opens file for writing only. For example, fstream fout(“text.dat”, ios::out);
                    \nios::app opens a file to append to end of file. For example, fstream
                    \nfile.open(“text.dat”,ios::app);<\/p>\n

                    Question 8.
                    \nDifferentiate between ios::in and ios::out.
                    \nAnswer:<\/p>\n\n\n\n\n\n\n\n
                    ios::in mode<\/td>\nios::out mode<\/td>\n<\/tr>\n
                    Opens file for reading only<\/td>\nOpen file for writing only<\/td>\n<\/tr>\n
                    Ifstream is stream type<\/td>\nOfstream is stream type<\/td>\n<\/tr>\n
                    Syntax: fstream<\/p>\n

                    object.open(“filename”, ios::in);<\/td>\n

                    		Syntax: fstream<\/p>\n

                    object.open(“filename”, ios::out);<\/td>\n<\/tr>\n

                    For example, fstream fin.open(“text.dat”, ios::in);<\/td>\nFor example, fstream file.open(“text.dat”,ios::app);<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

                    You can Download Chapter 12 Data File Handling Questions and Answers, Notes, 2nd PUC Computer Science Question Bank with Answers Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations. Karnataka 2nd PUC Computer Science Question Bank Chapter 12 Data File Handling 2nd PUC Computer Science Data File …<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/12526"}],"collection":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/comments?post=12526"}],"version-history":[{"count":0,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/12526\/revisions"}],"wp:attachment":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/media?parent=12526"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/categories?post=12526"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/tags?post=12526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}