Question

How does the compiler handle a pretested loop when the counter value comes from an external source?

a.

The compiler adds an unconditional jump at the end of the loop

b.

The compiler moves the comparison to the beginning of the loop

c.

The compiler adds an extra condition at the beginning of the loop

d.

The compiler terminates the loop prematurely

Posted under Reverse Engineering

Answer: (c).The compiler adds an extra condition at the beginning of the loop Explanation:When the counter value comes from an external source, the compiler adds an extra condition at the beginning of the loop to make sure that the loop is not entered if the counter has an illegal value.

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