Quiz for Reading from and writing to files

Course: C++ Language | Subject: Unit 12 | Topic: File Handling

Q1: Which function reads a single character from a file?

A. get() B. put() C. write() D. read()

Q2: Which function writes a single character to a file?

A. get() B. put() C. write() D. read()

Q3: Which function reads a block of data from a file?

A. get() B. put() C. write() D. read()

Q4: Which function writes a block of data to a file?

A. get() B. put() C. write() D. read()

Q5: Which operator is commonly used for formatted input from files?

A. << B. >> C. == D. =

Q6: Which operator is commonly used for formatted output to files?

A. << B. >> C. == D. =

Q7: What is the effect of using ios::app mode when writing?

A. Overwrite file B. Append to the end of file C. Read only D. Create new file only

Q8: Which method checks if the end of file (EOF) is reached?

A. eof() B. fail() C. bad() D. good()

Q9: Which function checks if the last input operation failed?

A. eof() B. fail() C. bad() D. good()

Q10: Which function checks if the stream is in a bad state (hardware failure)?

A. eof() B. fail() C. bad() D. good()

Q11: Which function resets the error state flags on a file stream?

A. clear() B. reset() C. flush() D. open()

Q12: What happens if you try to read beyond EOF?

A. Returns 0 or false B. Throws exception C. Returns garbage D. Halts program

Q13: How do you open a file for both reading and writing in binary mode?

A. fstream file("file.dat", ios::in | ios::out | ios::binary); B. ifstream file("file.dat", ios::binary); C. ofstream file("file.dat", ios::binary); D. fstream file("file.dat", ios::binary);

Q14: Which stream is used for input from keyboard?

A. ifstream B. ofstream C. cin D. cout

Q15: Which stream is used for output to the screen?

A. ifstream B. ofstream C. cin D. cout

Q16: How to check if a file stream was successfully opened?

A. if (file.is_open()) B. if (file.opened()) C. if (file.isopen()) D. if (file.open())

Q17: Which method flushes output buffer to the file?

A. flush() B. clear() C. sync() D. reset()

Q18: What is the use of ios::trunc flag?

A. Append data B. Delete file contents on open C. Read only mode D. Binary mode

Q19: Which function returns the current read position in a file?

A. tellp() B. tellg() C. setpos() D. getpos()

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