fgets() is used to read a file one line at a time.

The syntax of fgets is char *fgets(char *line, int maxline, FILE *fp). Which is true for fgets?

A

Returns line on success

B

On end of file or error it returns NULL

C

Nothing

D

Both returns line on success & On end of file or error it returns NULL

In a survey of 60 people, it was found that 25 read Newsweek magazine, 26 read Time, 26 read Fortune, 9 read both Newsweek and Fortune, 11 read both Newsweek and Time, 8 read both Time and Fortune and 3 read all magazines. Then number of people who read only Newsweek, Time and Fortune are respectively.

A

7, 1 and 2

B

4, 2 and 6

C

8, 10 and 12

D

2, 8 and 4

Consider the following partial Schedule S involving two transactions T1 and T2. Only the read and the write operations have been shown. The read operation on data item P is denoted by read(P) and the write operation on data item P is denoted by write(P) Time Instance Transaction-id T1 T2 1 read(A) 2 write(A) 3 read(C) 4 write(C) 5 read(B) 6 write(B) 7 read(A) 8 Commit 9 read(B) Schedule S Suppose that the transaction T1 fails immediately after time instance 9. Which one of the following statements is correct?

A

T2 must be aborted and then both T1 and T2 must be re-started to ensure transaction atomicity

B

Schedule S is non-recoverable and cannot ensure transaction atomicity

C

Only T2 must be aborted and then re-started to ensure transaction atomicity

D

Schedule S is recoverable and can ensure atomicity and nothing else needs to be done

A

i only

B

ii only

C

Both i and ii

D

Neither i nor ii

In a survey of 60 people, it was found that 25 people read newspaper H, 26 read newspaper I, 26 read newspaper T, 9 read both H and I, 11 read both H and T, 8 read both T and I, 3 read all three newspapers. Find the number of students who read exactly one newspaper.

A

22

B

30

C

25

D

None of these

In a survey conducted among 120 houses, it was found that 50 read Times of India, 60 read Indian Express and 48 read Hindustan Times; 20 read Times of India and Indian Express, 18 read Times of India and Hindustan Times and 24 read Indian Express and Hindustan Times. If 10 read all three, how many read only one newspaper?

A

50

B

32

C

64

D

84

In a City of 1000 people, 570 read History book and 424 read Indian Geography book and 254 read Polity book, 40 read History and Polity book and 58 read History and Indian Geography books and 70 read Polity and Indian Geography books. 100 read no Books. Then how many read only one book ?

A

462

B

742

C

642

D

None of these

In a town of 500 people, 285 read Hindu and 212 read Indian Express and 127 read Times of India, 20 read Hindu and Times of India and 29 read Hindu and Indian Express and 35 read Times of India and Indian express . 50 read no news paper . Then how many read only one paper ?

A

123

B

231

C

312

D

321

In a town, 45% population read magazine A, 55% read magazine B, 40% read magazine C, 30% read magazines A and B, 15% read magazines B and C, 25% read magazines A and C; and 10% read all the three magazines. What percentage do not read any magazine?

A

10%

B

15%

C

20%

D

25%

The following questions are based on the information given below: An advertising agency finds that, of its 170 clients, 115 read Indian Express, 110 read The Hindu and 130 read Times of India. Also 85 read Indian Express and Times of India, 75 read Indian Express and The Hindu, 95 read The Hindu and Times of India and 70 read all the three. How many read only The Hindu?

A

5

B

10

C

25

D

35

fgets() is used to read a file one line at a time.

Related Questions