Call
whatsapp
9447387064 | 9847003556
0471-2335855 | 8089080088 | 0471-2334855
9447387064 | 9847003556
0471-2335855 | 8089080088 | 0471-2334855
Cisco Training in Trivandrum, Trinity Technologies

No.1 Training Institute in Kerala

C++ - QUESTIONS : PART 30

Which header file is used for reading and writing to a file?

#include<iostream>

#include<fstream>

 #include<file>

 None of the mentioned
SHOW ANSWER

Which operator is used to insert the data into file?

>>

 <<

<

 None of the mentioned
SHOW ANSWER

Which function is used to position back from the end of file object?

seekg

 seekp

 both seekg & seekp

none of the mentioned
SHOW ANSWER

How many objects are used for input and output to a string?

1

2

3

4

SHOW ANSWER

Which stream class is to only write on files ?

ofstream

ifstream

fstream

iostream
SHOW ANSWER

Which stream class is to only read from files ?

ofstream

ifstream

fstream

iostream
SHOW ANSWER

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

ofstream

ifstream

fstream

iostream
SHOW ANSWER

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

ios:app

ios::out

ios::in

ios::binary
SHOW ANSWER

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
SHOW ANSWER

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);
SHOW ANSWER

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

myfile$close();

myfile@close();

myfile:close();

myfile.close();
SHOW ANSWER

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.
SHOW ANSWER

Which functions allow to change the location of the get and put positions ?

sg() and sp()

sekg() and sekp()

gog() and gop()

seekg() and seekp()
SHOW ANSWER

offset counted from the current position using ?

ios::curr

ios::cr

ios::cur

ios::current
SHOW ANSWER

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

True

False
SHOW ANSWER

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

ios::start

ios::beg

ios::begin

ios::beginning
SHOW ANSWER

Comment on this question. 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
SHOW ANSWER

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 );

ileObject.seekg(ios:end, n);
SHOW ANSWER
BACK | NEXT
TRINITY SOFTWARE SOLUTIONS,IInd floor, Radheyam Towers, Gandhari Amman Kovil Road, Pulimood, Trivandrum - 1
0471-2334855 | 2335855 | 9447387064 | 9847003556 info@trinitytechnology.in