Question

If the following program is supposed to put down seven tennis balls. Where is the error?

1 function start() {
2 placeSevenBalls();
3 }
4
5 function placeSevenBalls() {
6 for (var i = 0; i = 7; i++) {
7 putBall();
8 }
9 }

Options:
a. Line 2
b. Line 5
c. Line 6
d. Line 7

Answer 1

The program contains an error in line 6, where the for loop uses an assignment (=) instead of a comparison operator (<). To fix it, change the loop to 'for (var i = 0; i < 7; i++)'.

Step-by-step explanation:

The error in the program is found in line 6 of the provided code snippet. The conditional expression in the for loop uses an assignment operator = instead of a comparison operator < or <=. To place seven tennis balls correctly, the loop condition should ensure that the loop runs while the variable i is less than 7. Therefore, the corrected line 6 should be:

for (var i = 0; i < 7; i++) {
By correcting this comparison operator, the loop will iterate seven times, putting down a tennis ball with each iteration.