Question 1

Automatic counter loops should be used only when you do not know how many times the loop should be executed.

Accepted Answer

Automatic counter loops, also known as "for loops", are used when you know exactly how many times the loop should be executed. They are not appropriate for situations where the number of iterations will vary.

Question 2

When using a WHILE/WHILE-END instruction,if the condition is false before entering the loop,the loop instructions will still be processed one time.

Accepted Answer

If the condition is false before entering the loop, the loop instructions will not be processed at all.

Question 3

The conditional test is made at the end of the REPEAT/UNTIL instruction.

Accepted Answer

The conditional test is evaluated at the end of the REPEAT/UNTIL instruction. If the condition is true, the instruction block is exited. If it is false, the instruction block is repeated until the condition becomes true.

Question 4

When using the automatic counter loop:

Accepted Answer

The step value is optional in an automatic counter loop, as it defaults to a step of 1 if not specified.

Question 5

In an automatic counter loop,the instructions are repeated until:

Accepted Answer

In an automatic counter loop, the loop continues to execute until the counter exceeds the specified ending number, at which point the loop terminates. This is because the loop is designed to execute a certain number of times, incrementing the counter with each iteration, and stops when the counter surpasses the end condition.

Question 6

When nesting loops:

Accepted Answer

When nesting loops, the inner loop instructions are executed the required times for every time the outer loop instructions are executed once. This means that the inner loop will complete all iterations before the outer loop proceeds to the next iteration.

Question 7

Brackets are used in the algorithm of loops:

Accepted Answer

The answer of Brackets are used in the algorithm of...

Question 8

The conditional test is made at the end of the loop in a WHILE/WHILE-END instruction.

Accepted Answer

In a WHILE/WHILE-END instruction, the conditional test is made at the beginning of the loop, not at the end.

Question 9

The start,stop,and step values in an automatic counter loop:

Accepted Answer

The start, stop, and step values in an automatic counter loop can be constants, variables, or expressions. This allows for flexibility in creating the loop and controlling its iteration.

Question 10

The loop logic structure:

Accepted Answer

The loop logic structure allows instructions to be repeated, which is the main purpose of loops. While loops, for loops, and do-while loops all rely on the loop logic structure to execute a block of code multiple times. While decisions can be made within a loop (such as when to exit the loop), and multiple paths can be executed (such as using nested loops), these are secondary functions of the loop structure.

Question 11

When using a REPEAT/UNTIL instruction,if the condition is false before entering the loop,the loop instructions will still be processed at least one time.

Accepted Answer

This is because the loop instructions are processed first, and then the condition is checked at the end of each iteration. Therefore, even if the condition is false initially, the loop instructions will be executed at least once before the condition is checked again.

Question 12

An indicator:

Accepted Answer

An indicator can serve as all of the above options mentioned. It can act as a conditional end to the execution, a trip value to exit a loop, and can be utilized in error checking.

Question 13

Incrementing is done by adding a variable to another variable.

Accepted Answer

Incrementing refers to increasing a variable's value, typically by adding a fixed amount (often 1) to it, not necessarily by adding it to another variable.

Question 14

Indentation is used in the algorithm of loops:

Accepted Answer

Indentation is used in programming to create a visual hierarchy that indicates which instructions are to be repeated within a loop. The indentation is used to group related statements, so they are executed together as a single block of code. Therefore, option A is the correct answer.

Question 15

All loop structures use the diamond in the flowchart to indicate a loop.

Accepted Answer

In flowcharts, a diamond shape is typically used to represent a decision point, not a loop. Loops are often represented by arrows that circle back to an earlier point in the flowchart to indicate repetition.

Question 16

What will be printed when the following algorithm is processed?
 COUNTER = 0
DISTRIBUTION = 500
WHILE DISTRIBUTION > 200 AND COUNTER < 5
GIVEAWAY = DISTRIBUTION * .5
PRINT GIVEAWAY
DISTRIBUTION = DISTRIBUTION - GIVEAWAY
COUNTER = COUNTER + 1
WHILE-END

Accepted Answer

The loop runs twice. In the first iteration, GIVEAWAY is 250 (500 * 0.5), and in the second iteration, it is 125 (250 * 0.5). The loop stops after the second iteration because DISTRIBUTION becomes 125, which is not greater than 200.

Question 17

Accumulating and counting a set of data can be accomplished by using the loop logic structure.

Accepted Answer

Using a loop such as a for loop or while loop, we can iterate through a set of data and accumulate or count values as needed.

Question 18

When using an automatic counter loop,the counter can be decremented through the use of a negative number for the step.

Accepted Answer

Yes, in an automatic counter loop, the counter can be decremented by using a negative number for the step value.

Question 19

Accumulating allows the developer to total a group of numbers.

Accepted Answer

Accumulating involves adding up or totaling a group of numbers.

Question 20

When using a REPEAT/UNTIL instruction:

Accepted Answer

In a REPEAT/UNTIL instruction, the condition is evaluated after the last iteration of the repeated instructions. If the condition is true, the execution continues with the first of the repeated instructions, otherwise, it continues with the next instruction after the loop. Therefore, the correct option is B, where the execution continues with the next instruction after the loop when the condition is true and continues with the first of the repeated instruction when the condition is false.

Quiz 7: Problem Solving With Loops