Quiz for Random file access fseek

Q1: What is the purpose of the fseek() function?

A. To move the file pointer to a specific location B. To read data from a file C. To close a file D. To open a file

Q2: Which header file declares the fseek() function?

A. <stdio.h> B. <stdlib.h> C. <string.h> D. <math.h>

Q3: What are the parameters of fseek()?

A. File pointer, offset, origin B. File pointer, size, count C. File name, mode, pointer D. Offset, length, size

Q4: What are the valid values for the origin parameter in fseek()?

A. SEEK_SET, SEEK_CUR, SEEK_END B. START, CURRENT, END C. BEGIN, MIDDLE, LAST D. FIRST, NEXT, PREV

Q5: What does SEEK_SET mean?

A. Set pointer relative to beginning of file B. Set pointer relative to current position C. Set pointer relative to end of file D. None of the above

Q6: What does SEEK_CUR mean?

A. Set pointer relative to current position B. Set pointer relative to beginning C. Set pointer relative to end D. Seek to current file size

Q7: What does SEEK_END mean?

A. Set pointer relative to end of file B. Set pointer relative to beginning C. Set pointer relative to current position D. Seek to end plus offset

Q8: What does fseek() return on success?

A. 0 B. -1 C. EOF D. 1

Q9: What is the return value of fseek() on failure?

A. -1 B. 0 C. EOF D. 1

Q10: Which function can be used to reset the file pointer to the beginning?

A. fseek(fp, 0, SEEK_SET) B. fseek(fp, 0, SEEK_END) C. fseek(fp, 1, SEEK_CUR) D. fseek(fp, -1, SEEK_END)

Q11: Which function can get the current position of the file pointer?

A. ftell() B. fseek() C. fread() D. fopen()

Q12: To move the file pointer 10 bytes forward from current position, use:

A. fseek(fp, 10, SEEK_CUR) B. fseek(fp, -10, SEEK_CUR) C. fseek(fp, 10, SEEK_SET) D. fseek(fp, 10, SEEK_END)

Q13: Can fseek() be used with text files?

A. Yes, but behavior may be implementation-dependent B. No, only binary files C. Yes, works same as binary files D. No, use fread() instead

Q14: What is the type of the offset parameter in fseek()?

A. long int B. int C. size_t D. char

Q15: Can fseek() be used to move before the beginning of the file?

A. No, it leads to undefined behavior B. Yes, it wraps around C. Yes, sets pointer to 0 D. No, it causes the file to truncate

Q16: How to move file pointer to 5 bytes before the end?

A. fseek(fp, -5, SEEK_END) B. fseek(fp, 5, SEEK_END) C. fseek(fp, -5, SEEK_SET) D. fseek(fp, 5, SEEK_CUR)

Q17: Which of the following is TRUE about fseek()?

A. It allows random access in files B. It can only move file pointer forward C. It reads data from files D. It writes data to files

Q18: What happens if you pass an invalid file pointer to fseek()?

A. Undefined behavior or error B. It resets pointer to beginning C. It moves pointer to end D. It closes the file