Question

What is wrong with the following while repetition structure (assume z has value 100) While ( z >= 0 )
sum += z;

Answer 1

Answer:

ANS: x = x + 1;

x += 1;

++x;

x++;

Answer 2

Answer:

A single execution of the loop body is called an iteration. The loop in the example above makes three iterations.

If i++ was missing from the example above, the loop would repeat (in theory) forever. In practice, the browser provides ways to stop such loops, and in server-side JavaScript, we can kill the process.

Any expression or variable can be a loop condition, not just comparisons: the condition is evaluated and converted to a boolean by while.