Question Detail

Which stream class is to only write on files ?

ofstream
ifstream
fstream
iostream

Answer: Option A

1. What is use of eof() ?

Returns true if a file open for reading has reached the next character.
Returns true if a file open for reading has reached the next word.
Returns true if a file open for reading has reached the end.
Returns true if a file open for reading has reached the middle.

Answer: Option C

2. 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

3. 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.

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

True
False

Answer: Option A

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

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

Answer: Option B