Which snippet represents the loop variable update statement in the given code?
integer h = 2
while h < 30
Put h to output
h = h + 2

Rationale

h = h + 2

This statement updates the loop variable 'h' by adding 2 to its current value, ensuring that the loop progresses towards its termination condition. It is essential for controlling the iteration within the while loop, ultimately determining how many times the loop executes.

A (Put h to output) YOUR ANSWER

This choice represents an action taken within the loop, specifically outputting the current value of 'h'. However, it does not modify the value of 'h' and thus does not serve as the loop variable update statement. It is merely an operation that executes during each iteration.

B (h < 30) YOUR ANSWER

This option specifies the loop's condition, determining whether the loop should continue executing. It checks if 'h' is less than 30 but does not perform any update to 'h'. Therefore, it is not the correct answer as it does not fulfill the role of updating the loop variable.

C (Integer h - 2) YOUR ANSWER

This choice is incorrectly formatted and suggests an operation that does not exist in the code. It does not represent a valid statement for updating the variable 'h' within the loop. Instead, it seems to imply a declaration or a subtraction operation, neither of which is pertinent to the loop's variable update.

D (h = h + 2) CORRECT

This statement directly modifies the value of 'h', increasing it by 2 on each iteration of the loop. This update is crucial for progressing towards the loop's exit condition and is the correct representation of the loop variable update statement.

Conclusion

In looping constructs, the update statement is critical for modifying the loop variable, facilitating the transition towards the termination condition. In this case, 'h = h + 2' effectively updates the variable 'h' during each iteration, distinguishing it from other options that either perform a different action or are not valid updates. Understanding this concept is fundamental to mastering loop constructs in programming.

Which snippet represents the loop variable update statement in the given code? integer h = 2 while h < 30 Put h to output h = h + 2

h = h + 2

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Which snippet represents the loop variable update statement in the given code?
integer h = 2
while h < 30
Put h to output
h = h + 2