A programmer uses a trace table to dry-run the following algorithm. What is the final value of counter after the loop completes?

counter ← 0
FOR i ← 1 TO 4
counter ← counter + i
NEXT i

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Question

A programmer uses a trace table to dry-run the following algorithm. What is the final value of counter after the loop completes?

counter ← 0
FOR i ← 1 TO 4
   counter ← counter + i
NEXT i

Accepted Answer

10 — Each iteration adds i to counter: 0+1=1, 1+2=3, 3+3=6, 6+4=10. The final value is 10. Option A (4) results from only counting iterations rather than accumulating the sum. Option C (16) results from squaring 4. Option D (8) results from doubling 4, a common arithmetic error.

Answer

16

Answer

10

Answer

4

Answer

8

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