C Questions and Answers – File Operations – 2

This set of C Multiple Choice Questions & Answers (MCQs) focuses on “File Operations – 2”.

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

1. what is the function of fputs()?
a) read a line from a file
b) read a character from a file
c) write a character to a file
d) write a line to a file
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2. What does the following C code snippet mean?

char *gets(char *s)

a) reads the next input line into the array s
b) writes the line into the array s
c) reads the next input character into the array s
d) write a character into the array
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3. Which function will return the current file position for stream?
a) fgetpos()
b) fseek()
c) ftell()
d) fsetpos()
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4. Select the right explanation for the following C code snippet.

int fgetpos(FILE *stream, fpos_t *s)

a) records the current position in stream in *s
b) sets the file position for stream in *s
c) positions stream at the position recorded in *s
d) reads from stream into the array ptr
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5. Which functions is declared in <errno. h>?
a) fseek()
b) ftell()
c) ferror()
d) fsetpos()
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6. setvbuf() and setbuf() function controls buffering for the stream.
a) true
b) false
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7. The functions vprintf(), vfprintf(), and vsprintf() are not equivalent to the corresponding printf() functions except the variable argument list.
a) true
b) false
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8. The______function reads atmost one less than the number of characters specified by size from the given stream and it is stored in the string str.
a) fget()
b) fgets()
c) fput()
d) fputs()
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9. What does the following C code snippet mean?

int ungetc(int c, FILE *stream)

a) pushes c back onto a stream
b) deletes c from the stream
c) reads frequency of c in stream
d) no action is taken by the command
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10. Choose the correct difference between getc() and fgetc().
a) If it is not a macro, it may evaluate stream more than once
b) if it is amacro, it may not evaluate stream more than once
c) if it is a macro, it may evaluate stream more than once
d) no difference between fgetc() and getc()
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