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Which among following is used to open a file in binary mode ?

  • ios:app
  • ios::out
  • ios::in
  • ios::binary

Answer: Option D

Explanation:

ios:app -> All output operations are performed at the end of the file, appending the content to the current content of the file.

ios::out -> Open for output operations.

ios::in -> Open for input operations.

Similar Questions :

1. offset counted from the current position using ?

  • ios::curr
  • ios::cr
  • ios::cur
  • ios::current

Answer: Option C

2. How to get position to the nth byte of fileObject ?

  • fileObject.seekg( 'filename',n );
  • fileObject.seekg( n, 'filename' );
  • fileObject.seekg( n );
  • fileObject.seekg( n, ios::app );

Answer: Option C

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

  • ofstream
  • ifstream
  • fstream
  • iostream

Answer: Option A

4. eof() is used to get

  • easy code reivew
  • end of file
  • debug report
  • file close

Answer: Option B

5. Which is correct syntax for, position n bytes back from end of fileObject ?

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

Answer: Option C

Read more from - C++ File Handling Questions Answers
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