download Mastguru Android App

Question Detail

ios::trunc is used for ?

  • If the file is opened for output operations and it already existed, no action is taken.
  • If the file is opened for output operations and it already existed, its previous content is deleted and replaced by the new one.
  • If the file is opened for output operations and it already existed, then a new copy is created.
  • None of above

Answer: Option B

Similar Questions :

1. Which is among following is used to Open a file for output and move the read/write control to the end of the file ?

  • ios::ate
  • ios::at
  • ios::ann
  • ios::end

Answer: Option A

2. Which stream class is to only write on files ?

  • ofstream
  • ifstream
  • fstream
  • iostream

Answer: Option A

3. Which stream class is to only read from files ?

  • ofstream
  • ifstream
  • fstream
  • iostream

Answer: Option B

4. How to get position n bytes forward in fileObject ?

  • fileObject.seekg( ios::cur, n );
  • fileObject.seekg( n, ios:cur );
  • fileObject.seekg( n, ios::cur );
  • fileObject.seekg( ios:cur, n );

Answer: Option C

5. Which is correct syntax ?

  • myfile:open ("example.bin", ios::out);
  • myfile.open ("example.bin", ios::out);
  • myfile::open ("example.bin", ios::out);
  • myfile.open ("example.bin", ios:out);

Answer: Option B

Read more from - C++ File Handling Questions Answers
Post a comment

    Mastguru Youtube Channel

    Videos @mastguru

    Free useful videos - Subscribe Mastguru
     

    Get Free Current Affairs and Govt Jobs Alerts in your mailbox

    To Appreciate Our Effort, Please Like Us

    Quantitative Aptitude
    English Aptitude
    Reasoning Aptitude
    Computer Awareness
    General Knowledge
    Current Affairs
    IT Officer Aptitude
    Programming Aptitude
    Latest Govt Jobs