Unit 12 : error no

Which library function is used to display an error message corresponding to the error stored in errno?

• perror()

• printf()

• strerror()

• fprintf()

What does the function fopen() return if it fails to open a file?

• EOF

• 0

• -1

• NULL

Which header file contains the definition of the errno variable?

• stdio.h

• assert.h

• errno.h

• time.h

What does EOF stand for in file handling?

• End of File

• Error on File

• all

• End of Frame

How many arguments does the main function take when using command-line arguments?

• 1

• -1

• 2

• 4

What does argc represent in the main(int argc, char *argv[]) function?

• Argument count

• Array of arguments

• Pointer to arguments

• Argument vector