C++ File Handling Questions Answers

• 1. Which is correct syntax ?
  

  1. myfile:open ("example.bin", ios::out);
  2. myfile.open ("example.bin", ios::out);
  3. myfile::open ("example.bin", ios::out);
  4. myfile.open ("example.bin", ios:out);

  Answer :

  Option B

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

  1. ios:app
  2. ios::out
  3. ios::in
  4. 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.

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

  1. fileObject.seekg( 0, ios::end );
  2. fileObject.seekg( 0, ios::end );
  3. fileObject.seekg( 0, ios::end );
  4. fileObject.seekg( 0, ios::end );

  Answer :

  Option A

• 4. Which stream class is to only read from files ?

  1. ofstream
  2. ifstream
  3. fstream
  4. iostream

  Answer :

  Option B

• 5. Which among following is correct syntax of closing a file in c++ ?

  1. myfile$close();
  2. [email protected]();
  3. myfile:close();
  4. myfile.close();

  Answer :

  Option D

• 6. Which stream class is used to both read and write on files ?

  1. ofstream
  2. ifstream
  3. fstream
  4. iostream

  Answer :

  Option C

• 7. How to get position n bytes forward in fileObject ?

  1. fileObject.seekg( ios::cur, n );
  2. fileObject.seekg( n, ios:cur );
  3. fileObject.seekg( n, ios::cur );
  4. fileObject.seekg( ios:cur, n );

  Answer :

  Option C