In the for loop syntax for (int i = 0; i < n; i++), what does i < n specify?

• A. The loop continues while i is less than n
• B. The loop increments i by n
• C. The loop starts with i equal to n
• D. The loop terminates when i becomes 0

Answer: (A)

i < n is the continuation test for the loop. It’s checked before each iteration, and as long as this condition is true, the loop runs; when i reaches n, the condition becomes false and the loop stops. Since i starts at 0 and increases by 1 each time (i++), the loop executes for i = 0, 1, 2, ..., n-1, doing something n times. The other descriptions don’t match how the loop is written: the increment is by 1, not by n; the initialization sets i to 0, not n; and termination happens when i reaches n, not when it becomes 0.