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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. Which stream class is to only read from files ?

  • ofstream
  • ifstream
  • fstream
  • iostream

Answer: Option B

2. 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

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

  • ofstream
  • ifstream
  • fstream
  • iostream

Answer: Option A

4. Which among is used for positioning relative to the beginning of a stream ?

  • ios::start
  • ios::beg
  • ios::begin
  • ios::beginning

Answer: Option B

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

  • True
  • False

Answer: Option A

Read more from - C++ File Handling Questions Answers
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