Module 6

Question 1

for loop is pre-test loop

Answer 1

True

Question 2

Each pass through a loop is called a/an ________

Answer 2

iteration

Question 3

In counter-controlled repetition, it requires the following except _________

• the name of a control variable
• the loop-continuation condition that tests for the initial value of the control variable to determine when to exit
• the control variable to be incremented (or decremented) each time through the loop
• the initial value of the control variable

Answer 3

the loop-continuation condition that tests for the initial value of the control variable to determine when to exit

Question 4

What is correct syntax of for loop?

Answer 4

for(initialization; condition; increment/decrement)

Question 5

The loop iterates while the condition is true.

Answer 5

True

Question 6

Values that are used to end loops are referred to as _____ values.

Answer 6

Sentinel

Question 7

The while loop evaluates the test expression inside the parenthesis {} if it is true.

Answer 7

False

Question 8

When the condition is tested and the result is false, the loop body will be skipped and the first statement after the while loop will be executed.

Answer 8

True

Question 9

A continue statement causes execution to skip to ______

Answer 9

the next iteration of the loop

Question 10

Which of the following loop constructs perform the statement at least once?

Answer 10

do-while

Question 11

Which looping process is best used when the number of iterations is known?

Answer 11

for

Question 12

The statement i++; is equivalent to _________

Answer 12

i = i + 1;

Question 13

When using do-while loop is that we need to use __________ statement inside while loop so that the loop variable gets changed on each iteration, and at some point condition returns false.

Answer 13

update statement/increment or decrement

Question 14

If there is more than one statement in the block of a for loop, which of the following must be placed at the beginning and the ending of the loop block?

Answer 14

braces { }

Question 15

If the test occurs at the beginning of the loop, the type of loop is called a post-test loop or entrance-controlled loop.

Answer 15

True

Question 16

Can a for loop contain another for loop?

Answer 16

Yes

Question 17

A while loop that never stops is said to be the infinite while loop, when we give the condition in such a way so that it never returns ___.

Answer 17

False

Question 18

Which of the following is an entry-controlled loop?

• for only
• do-while only
• for and while

Answer 18

for and while

Question 19

When the condition becomes true, program control passes to the line immediately following the loop.

Answer 19

False

Question 20

What’s wrong? while( (i < 10) && (i > 24))

Answer 20

the test condition is always false

Question 21

What is the way to suddenly come out of or quit any loop in C++ language?

Answer 21

break; statement

Question 22

Given that the increment/decrement operator is ++/– and the first testing is true in a loop, the formula to compute for the number of loops when using the relational operator <= is |TV – IV| + 1

Answer 22

True

Question 23

goto statement allows making an absolute jump to another point in the program.

Answer 23

True

Question 24

When a continue statement is encountered inside a loop, control jumps to the beginning of the loop for next iteration, skipping the execution of statements inside the body of loop for the current iteration.

Answer 24

True

Question 25

Condition in for loop is evaluated on each loop iteration, if the condition is false then the statements inside the for loop body gets executed.

Answer 25

False

Question 26

If the test expression is false, the loop terminates (ends).

Answer 26

True

Question 27

Choose correct C++ while loop syntax.

Answer 27

while(condition) { //statements }

Question 28

If the test expression is true, statements inside the body of while loop are executed. Then, the test expression is evaluated again.

Answer 28

False

Question 29

Which of the following is most suitable for a menu-driven program?

Answer 29

do-while

Question 30

continue statement is used to come out of the loop instantly

Answer 30

False

Question 31

Do-while is a pre-test loop

Answer 31

False

Question 32

How many times is a do while loop guaranteed to loop?

Answer 32

1

Question 33

After every execution of for loop’s body, the increment/decrement part of for loop executes that updates the loop counter.

Answer 33

True

Question 34

The statement for (; ;) ______

Answer 34

will loop forever

Question 35

In a group of nested loops, which loop is executed the most number of times?

Answer 35

the innermost loop

Question 36

A loop inside another loop is called a nested loop.

Answer 36

True

Question 37

Which looping process checks the test condition at the end of the loop?

Answer 37

do-while

Question 38

A do-while loop that never stops is said to be the infinite while loop, when we give the condition in such a way so that it never returns ___,

Answer 38

True

Question 39

The destination point is identified by a label, which is then used as an argument for the goto instruction.

Answer 39

True

Question 40

What is the final value of x when the code int x=0; while(x<10) {x++;} is run?

Answer 40

10

Question 41

Which is not a loop structure of C++?

Answer 41

repeat-until

Question 42

What is the effect of writing a break statement inside a loop?

Answer 42

It cancels remaining iterations

Question 43

Which looping process checks the test condition at the beginning of the loop?

Answer 43

for and while

Question 44

Which loop is correct? - do {//code}while (condition) - do {//code}while (condition); - do {//code}while (condition):

Answer 44

do {//code}while (condition);