Question

The value of tm_isdst is ____ when DST( Daylight Savings Time) is in effect, ______ when DST is not in effect and ______ when the DST status is unknown.

(a) -1, 1, 0

(b) 1, 0, -1

(c) 0, 1, -1

(d) 1, -1, 0

The question was asked during an interview.

The question is from Date and Time Function topic in division C Library of C

Answer 1

Correct answer is (b) 1, 0, -1

Best explanation: The value of tm_isdst is 1 when Daylight Savings Time is in effect, 0 when DSP is not in the effect and -1 when DST status is not known.