The following program is supposed to put down three tennis balls. Where is the logic error?

Question

function main() {
placeThreeBalls();
}

function placeThreeBalls() {
for (let i = 0; i <= 3; i++) {
putBall();
}
}

main();
JavaScript

- Line 2

- Line 5

- Line 6

- Line 7

Answer 1

The logic error in the program lies within Line 6. The for loop is configured to run from i = 0 to i <= 3. Given that the loop condition includes i <= 3, it will execute four times (for i = 0, i = 1, i = 2, and i = 3).

If the intention is to place exactly three tennis balls, the loop should be structured to iterate three times. Thus, it should change the condition to i < 3 (or initialize i starting from 1 and use i <= 3 if you wish the loop to be counted starting from 1).

So the corrected line 6 should be either:

for (let i = 0; i < 3; i++) {

or

for (let i = 1; i <= 3; i++) {

This would ensure that only three balls are placed instead of four.