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
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Which operator is used to insert the data into file?
>>
<<
<
None of the mentioned
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Which function is used to position back from the end of file object?
seekg
seekp
both seekg & seekp
none of the mentioned
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How many objects are used for input and output to a string?
1
2
3
4
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Which stream class is to only write on files ?
ofstream
ifstream
fstream
iostream
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Which stream class is to only read from files ?
ofstream
ifstream
fstream
iostream
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Which stream class is used to both read and write on files ?
ofstream
ifstream
fstream
iostream
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Which among following is used to open a file in binary mode ?
ios:app
ios::out
ios::in
ios::binary
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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
If the file is opened for output operations and it already existed, its previous content is deleted and replaced by the new one.
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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);
myfile.open ("example.bin", ios::out);
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Which among following is correct syntax of closing a file in c++ ?
myfile$close();
myfile@close();
myfile:close();
myfile.close();
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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.
Returns true if a file open for reading has reached the end.
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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()
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offset counted from the current position using ?
ios::curr
ios::cr
ios::cur
ios::current
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Calling the stream's member function sync() causes an immediate synchronization.
True
False
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Which among is used for positioning relative to the beginning of a stream ?
ios::start
ios::beg
ios::begin
ios::beginning
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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
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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);
fileObject.seekg(n, ios::end );
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