C # question: QUESTION 1 With while loops, if the conditional expression evaluat

Question

C # question:

QUESTION 1

With while loops, if the conditional expression evaluates to true, the body of the loop is not performed; control transfers to the statements following the loop.

True

False

1.00000 points   

QUESTION 2

What would be the output produced from the following statements?
int aValue = 1;
do
{
               aValue++;
               Write(aValue++);
}
while (aValue < 3);

23

234

1234

2

none of the above

1.00000 points   

QUESTION 3

Which of the following represents a pretest loop?

while

do. . .while

for

a and b

a and c

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QUESTION 4

When used with a while statement, which jump statement causes execution to halt inside a loop body and immediately transfers control to the conditional expression?

break

goto

return

continue

none of the above

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QUESTION 5

The only posttest loop structure available in C# is _____.

while

for

do...while

foreach

continue

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QUESTION 6

If a loop body uses a numeric value that is incremented by three with each iteration through the loop until it reaches 1000, which loop structure would probably be the best option?

foreach

for

while

do. . .while

none of the above

1.00000 points   

QUESTION 7

Which of the following is NOT a keyword used to enable unconditional transfer of control to a different program statement?

continue

break

goto

while

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QUESTION 8

Using the break or continue statements with a loop violates the single entry and single exit guideline for developing a loop.

True

False

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QUESTION 9

The do...while statement is a posttest loop, which means that the conditional expression is tested before any of the statements in the body of the loop are performed.

True

False

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QUESTION 10

If a numeric variable is being changed by a consistent amount with each iteration through the loop, the while statement is the best choice of loop constructs.

True

False

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QUESTION 11

Which loop structure must be used with a collection such as an array?

foreach

for

while

do. . .while

none of the above

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QUESTION 12

If you know your loop will always be executed at least once, use the do…while loop option.

True

False

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QUESTION 13

Which of the following is a valid C# pretest conditional expression that enables a loop to be executed as long as the counter variable is less than 10?

do while (counter < 10)

while (counter < 10)

foreach (counter in 10)

none of the above

all of the above

1.00000 points   

QUESTION 14

If a loop body should be executed at least once, which loop structure would be the best option?

foreach

for

while

do. . .while

none of the above

1.00000 points   

QUESTION 15

To produce the output
2 4 6 8 10
which should be the loop conditional expression to replace the question marks?
int n = 0;
do
{
               n = n + 2;
               Write("{0} ", n);
}
while (????);

n < 11

n < 10

n < 8

n >= 2

n > 8

23

234

1234

2

none of the above

Explanation / Answer

Ans1. False

Ans2. option 4

Ans3. option 5

Ans4. option 4

Ans 5. option 3

Ans 6. option 2

Ans 7. option 4

Ans 8. True

Ans 9. False

Ans 10. False

Ans 11. option 1

Ans 12. True

Ans 13. option 2

Ans 14. option 4

Ans 15. option 2

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