C Programming – File Access

C Programming - File Access

Question 1

 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 of the mentioned

Question 2

For binary files, a ___ must be appended to the mode string.

A	Nothing
B	“b”
C	“binary”
D	“01″

Question 3

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

A	Nothing
B	EOF
C	NULL
D	Depends on compiler

Question 4

Which is true about getc.getc returns?

A	The next character from the stream referred to by file pointer
B	EOF for end of file or error
C	Both a & b
D	Nothing.

Question 5

When a C program is started, O.S environment is responsible for opening file and providing     pointer for that file?

A	Standard input
B	Standard output
C	Standard error
D	All of the menitoned

Question 6

 FILE is of type ______ ?

A	int type
B	char * type
C	struct type
D	None of the mentioned

Question 7

What is the meant by ‘a’ in the following operation?     fp = fopen(“Random.txt”, “a”);

A	Attach
B	Append
C	Apprehend
D	Add

Question 8

Which of the following mode argument is used to truncate?

A	a
B	f
C	w
D	t

Question 9

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

A	.txt
B	.bin
C	.c
D	None of the mentioned

Question 10

 Which of the following fopen statements are illegal?

A	fp = fopen(“abc.txt”, “r”);
B	fp = fopen(“/home/user1/abc.txt”, “w”);
C	fp = fopen(“abc”, “w”);
D	None of the mentioned

Question 11

 What does the following segment of code do?     fprintf(fp, “Copying!”);

A	It writes “Copying!” into the file pointed by fp
B	It reads “Copying!” from the file and prints on display
C	It writes as well as reads “Copying!” to and from the file and prints it
D	None of the mentioned

Question 12

FILE reserved word is

A	A structure tag declared in stdio.h
B	One of the basic datatypes in c
C	Pointer to the structure defined in stdio.h
D	It is a type name defined in stdio.h

Question 13

. What is the output of this C code?

    #include 
    int main()
    {
    FILE *fp = stdin;
    int n;
    fprintf(fp, "%d", 45);
    }

A	Compilation error
B	45
C	Nothing
D	Depends on the standard

Question 14

What is the output of this C code?

    #include 
    #include 
    int main()
    {
    FILE *fp = stdout;
    int n;
    fprintf(fp, "%d", 45);
    }

A	Compilation error
B	45
C	Nothing
D	Depends on the standard

Question 15

 stdout, stdin and stderr are

A	File pointers
B	File desciptors
C	Streams
D	Structure

Question 16

 Which of the following statements about stdout and stderr are true?

A	Same
B	Both connected to screen always.
C	Both connected to screen by default.
D	stdout is line buffered but stderr is unbuffered.

Question 17

What is the output of this C code?

    #include 
    int main()
    {
    FILE *fp = stdout;
    int n;
    fprintf(fp, "%d ", 45);
    fprintf(stderr, "%d ", 65);
    return 0;
    }

A	45 65
B	65 45
C	65
D	Compilation error

Question 18

What is the output of this C code?

    #include 
    int main()
    {
    FILE *fp = stdout;
    int n;
    fprintf(fp, "%d\n ", 45);
    fprintf(stderr, "%d ", 65);
    return 0;
    }

A	45 65
B	65 45
C	65
D	Compilation error

Question 19

What is the output of this C code?

    #include 
    int main()
    {
    FILE *fp = stdout;
    int n;
    fprintf(fp, "%d ", 45);
    fflush(stdout);
    fprintf(stderr, "%d", 65);
    return 0;
    }

A	45 65
B	65 45
C	45
D	Compilation error

Check Your Answers:

  1. A

  2. B

  3. C

  4. C

  5. D

  6. C

  7. B

  8. C

  9. D

10. D

11. A

12. D

13. C

14. B

15. A

16. C

17. B

18. A

19. A

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