Question

in a ____, the loop body executes at least one time because the loop control variable is not tested until after one iteration.
loop control
pretest loop
nested loop
posttest loop
question 31
usually, when you create nested loops, each loop has its own ____.
entrance condition
loop control variable
goto statement
sentinel value

Explanation:

• First question: In a posttest loop, the loop body executes first, and then the loop control variable is tested. So it will execute at least once. A pretest loop tests the condition before the loop body execution (might not execute if condition is false initially). Loop control is a general concept, and a nested loop is about loops inside other loops.
• Second question: When creating nested loops (loops inside other loops), each loop typically has its own loop control variable. For example, in a for loop nested inside another for loop in programming, you might have for(i = 0; i < n; i++) (outer loop with control variable i) and for(j = 0; j < m; j++) (inner loop with control variable j). An entrance condition is more about the overall condition for loop entry (like in a pre - test loop condition), a goto statement is a different programming construct (used for unstructured jumps), and a sentinel value is used to terminate a loop in some cases (but not specific to each loop in a nested loop context).

Answer:

• First question: posttest loop
• Second question: loop control variable