UGC-NET | UGC NET CS 2018 Dec – II | Question 31
Consider the following pseudo-code fragment, where m is a non-negative integer that has been initialized :
p=0;
k=0;
while(k < m)
p = p + 2k;
k=k+1;
end while
Which of the following is a loop invariant for the while statement?
(Note: a loop variant for a while statement is an assertion that is true each time guard is evaluated during the execution of the while statement).
(A) p = 2k − 1 and 0≤k<m
(B) p = 2k+1 − 1 and 0≤k<m
(C) p = 2k − 1 and 0≤k≤m
(D) p = 2k+1 − 1 and 0≤k≤m
Answer: (C)
Explanation:
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Last Updated :
06 Oct, 2020
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