Question

Identify the false statement.

a. A loop is a structure that allows repeated execution of a block of statements as long as a tested expression is true.
b. When the Boolean evaluation tested in a loop becomes false, the loop body executes one last time.
c. If a loop's tested Boolean expression is true, a block of statements called the loop body executes before the Boolean expression is evaluated again.

Answer 1

Statement 'b.' is false; the correct version is that when the Boolean evaluation in a loop becomes false, the loop stops executing and does not execute the loop body anymore.

Step-by-step explanation:

The student has asked to identify the false statement among three statements about loops in programming. Let's address each statement:

1. Loop execution: A loop is a structure that allows repeated execution of a block of statements as long as a tested expression is true. This statement is true.
2. Loop termination: When the Boolean evaluation tested in a loop becomes false, the loop body executes one last time. This statement is false. A correct version would be: When the Boolean evaluation tested in a loop becomes false, the loop does not execute the loop body anymore and exits the loop.
3. Loop iteration: If a loop's tested Boolean expression is true, a block of statements called the loop body executes before the Boolean expression is evaluated again. This statement is true.

The false statement is 'b.' which implies that a loop executes one last time after the condition becomes false, which is incorrect. In most programming languages, when the loop's condition becomes false, the loop stops immediately.