File Input Output MCQs

Question 1

How do you check if a file exists in C?

Accepted Answer

Check the return value of fopen()

Answer

Use the 'fileexist' function

Answer

Use the 'filestatus' variable

Answer

Use the 'fileopen' function

Question 2

What is the purpose of the 'ftell' function in C?

Accepted Answer

To find the current position of the file pointer

Answer

To find the total number of bytes in a file

Answer

To check if a file is open

Answer

To find the file's size

Question 3

Which function is used to write a character to a file in C?

Accepted Answer

putc()

Answer

writechar()

Answer

putchar()

Answer

fileputchar()

Question 4

What happens if you try to open a file in 'r' mode that doesn't exist in C?

Accepted Answer

An error occurs, and the file remains unchanged

Answer

A new file is created

Answer

The program terminates

Answer

The file is deleted

Question 5

How do you read a string from a file in C?

Accepted Answer

fgets()

Answer

fscanf()

Answer

readstring()

Answer

getline()

Question 6

What does the 'remove' function in C do?

Accepted Answer

Deletes a file

Answer

Renames a file

Answer

Closes a file

Answer

Appends data to a file

Question 7

In C, what is the purpose of the 'fflush' function?

Accepted Answer

To flush the standard output buffer

Answer

To flush the standard input buffer

Answer

To close a file

Answer

To check if a file exists

Question 8

Which function is used to create a new directory in C?

Accepted Answer

mkdir()

Answer

createdir()

Answer

makedir()

Answer

newfolder()

Question 9

How do you write an integer to a file in C?

Accepted Answer

fprintf()

Answer

putint()

Answer

writeint()

Answer

filewriteint()