Which line is a loop variable update statement in the sample code?

Comprehensive and Detailed Explanation From Exact Extract:

The loop variable update statement modifies the loop control variable to progress the loop. In this do-while loop, h tracks the number of attempts, and its update is critical to the loop’s termination. According to foundational programming principles, the update statement is typically within the loop body.

Code Analysis:

integer h = 0: Initializes h (not an update).

Put "What is the password?" to output: Outputs prompt (not an update).

String userInput = Get next input: Gets input (not an update).

if userInput != pwd: Conditional check (not an update).

Put "Incorrect." to output: Outputs message (not an update).

h = h + 1: Updates h, incrementing the attempt counter.

while (userInput != pwd) and (h <= 10): Loop condition (not an update).

Option A: "if userInput = pwd." Incorrect. This is a conditional statement, not an update. (Note: The code uses = for comparison, which may be a typo; == is standard.)

Option B: "h = h + 1." Correct. This updates the loop variable h, incrementing it to track attempts.

Option C: "(userInput != pwd) and (h <= 10)." Incorrect. This is the loop condition, not an update.

Option D: "integer h = 0." Incorrect. This is the initialization, not an update.

Certiport Scripting and Programming Foundations Study Guide (Section on Loops and Variables).

C Programming Language Standard (ISO/IEC 9899:2011, Section on Do-While Loops).

W3Schools: “C Do While Loop” (https://www.w3schools.com/c/c_do_while_loop.php).