QUIZ ON : c - FILE PROCESSING

FILE PROCESSING

00:00:00

Question No# : 01 out of 27

In C language, FILE is of which data type?

A. int

B. char *

C. struct

D. None of the mentioned

Question No# : 02 out of 27

Which of the following true about FILE *fp

A. FILE is a keyword in C for representing files and fp is a variable of FILE type.

B. FILE is a structure and fp is a pointer to the structure of FILE type

C. FILE is a stream

D. FILE is a buffered stream

Question No# : 03 out of 27

Which function will return the current file position for stream?

A. fgetpos()

B. fseek()

C. ftell()

D. fsetpos()

Question No# : 04 out of 27

fseek() should be preferred over rewind() mainly because

A. rewind() doesn't work for empty files

B. rewind() may fail for large files

C. In rewind, there is no way to check if the operations completed successfully

D. All of the above

Question No# : 05 out of 27

Which function is used to close a file?

A. fclose()

B. closefile()

C. fileclose()

D. endfile()

Question No# : 06 out of 27

In a multilist organisation

A. records that have an equivalent value for a given secondary index item are linked together to form a list

B. records are loaded in ordered sequence defined by collating sequence by content of key

C. records are directly accessed by records key field

D. none of the above

Question No# : 07 out of 27

What is the purpose of getc()?

A. read a character from STDIN

B. read a character from a file

C. read all file

D. read file randomly

Question No# : 08 out of 27

The value of EOF is_____

A. -1

B. 0

C. 1

D. 10

Question No# : 09 out of 27

In C, what does the function fopen() return if it fails to open a file?

A. -1

B. 1

C. Null

D. EOF

Question No# : 10 out of 27

End of file is detected by

A. fend( )

B. endf( )

C. EOF

D. FEND

Question No# : 11 out of 27

FILE is of type ______

A. int type

B. char * type

C. struct type

D. None of the mentioned

Question No# : 12 out of 27

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()

Question No# : 13 out of 27

The two type of file structures existing in VSAM file are

A. Key sequenced structures, entry sequenced structures

B. Key sequenced structure, exit sequenced structures

C. Entry sequenced structures, exit sequenced structures

D. None of the above

Question No# : 14 out of 27

Which of the following is not a type of file access permission?

A. Read

B. Write

C. Execute

D. Copy

Question No# : 15 out of 27

The first and second arguments of fopen are ______

A. A character string containing the name of the file & the second argument is the mode

B. A character string containing the name of the user & the second argument is the mode

C. A character string containing file poniter & the second argument is the mode

D. None of the mentioned

Question No# : 16 out of 27

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

Question No# : 17 out of 27

Which mode is used to open a file for reading in C?

A. "r"

B. "w"

C. "rw"

D. "read"

Question No# : 18 out of 27

What is the function of the mode ‘ w+’?

A. create text file for writing, discard previous contents if any

B. create text file for update, discard previous contents if any

C. create text file for writing, do not discard previous contents if any

D. create text file for update, do not discard previous contents if any

Question No# : 19 out of 27

EOF is an integer type defined in stdio. h and has a value

A. 1

B. 0

C. NULL

D. â€“ 1

Question No# : 20 out of 27

What does fp point to in the program?

int main()
{
	FILE *fp;
	fp=fopen("trial", "r");
	return 0;
}

What does fp point to in the program?

int main()
{
	FILE *fp;
	fp=fopen("trial", "r");
	return 0;
}

A. The first character in the file

B. A structure which contains a char pointer which points to the first character of a file

C. The name of the file

D. The last character in the file

Question No# : 21 out of 27

If a file is open in ‘write’ mode, then

A. If it does not exist, an error is returned

B. If it does not exist, it is created

C. If it exists, then data is written at the end

D. If it exists, error is returned

Question No# : 22 out of 27

getc() returns EOF when

A. End of files is reached

B. When getc() fails to read a character

C. Both of the above

D. None of the above

Question No# : 23 out of 27

Which one of the following is correct syntax for opening a file.

A. FILE *fopen(const *filename, const char *mode)

B. FILE *fopen(const *filename)

C. FILE *open(const *filename, const char *mode)

D. FILE open(const*filename)

Question No# : 24 out of 27

Which type of files can’t be opened using fopen()?

A. .txt

B. .bin

C. .c

D. none of the mentioned

Question No# : 25 out of 27

If the mode includes b after the initial letter, what does it indicates?

A. text file

B. big text file

C. binary file

D. blueprint text

Question No# : 26 out of 27

If there is any error while opening a file, fopen will return

A. Nothing

B. EOF

C. NULL

D. Depends on compiler

Question No# : 27 out of 27

What does fseek() do?

A. Moves the file pointer to a specific location

B. Reads a file

C. Writes to a file

D. Closes a file