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Which stream class is to only read from files ?

  • ofstream
  • ifstream
  • fstream
  • iostream

Answer: Option B

Similar Questions :

1. 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

2. offset counted from the current position using ?

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

Answer: Option C

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

  • ofstream
  • ifstream
  • fstream
  • iostream

Answer: Option C

4. 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

5. 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

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