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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. Calling the stream's member function sync() causes an immediate synchronization.

  • True
  • False

Answer: Option A

2. 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

3. How to find the position at end of fileObject ?

  • fileObject.seekg( 0, ios::end );
  • fileObject.seekg( 0, ios::end );
  • fileObject.seekg( 0, ios::end );
  • fileObject.seekg( 0, ios::end );

Answer: Option A

4. 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

5. 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.

Read more from - C++ File Handling Questions Answers
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