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The third clause can contain none, one, or more valid expressions separated by commas.

If there are more than one, they are evaluated in left-to-right order.

When they are evaluated

The expressions in the third clause are evaluated once during each iteration.

However, it is very important to remember that despite the physical placement of the clause in the first line, the expressions in the third clause are notevaluated until after the code in the block has been evaluated.

Typically an update clause

The third clause is typically used to update a counter, but this is not a technical requirement.

This clause can be used for just about any purpose.

However, the counter must be updated somewhere within the block of code or the loop will never terminate.

(Stated differently, something must occur within the block of code to eventually cause the conditional expression to evaluate to false.Otherwise, the loop will never terminate on its own. However, it is possible to execute a return or break within the block to terminate the loop.)

Note the first output value for this program

Because the update in the third clause is not executed until after the code in the block has been executed, the first value displayed by this program is the value zero.

Back to Question 12

Answer 11

E. None of the above

Explanation 11

And the answer is ...

The output produced by this program is:

1 3 5

A simple while loop

This program uses a simple while loop to display the value of a counter, once during each iteration.

Behavior of a while loop

As long as the relational expression in the conditional clause returns true, the block of code immediately following the conditional clause is executed.

When the relational expression returns false, the block of code following the conditional clause is skipped and control passes to the next executablestatement following that block of code.

An entry-condition loop

The while loop is an entry condition loop, meaning that the test is performed once during each iteration before the block of code is executed.

If the first test returns false, the block of code is skipped entirely.

An exit-condition loop

There is another loop, known as a do-while loop, that performs the test after the block of code has been executed once. This guarantees that theblock of code will always be executed at least once.

Just to make things interesting ...

Two statements using the increment operator were placed inside the loop in this program.

Therefore, insofar as the conditional test is concerned, the counter is being incremented by twos. This causes the output to display the sequence 1 3 5.

Nested while loops

The while loop control structure can contain loops nested inside of loops, which leads to some interesting behavior.

Back to Question 11

Answer 10

F. x != 4,5,6

Explanation 10

A multiple-choice structure

This is a form of control structure that is often used to make logical decisions in a multiple-choice sense.

This is a completely general control structure. It can be used with just about any type of data.

Questions & Answers

how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
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Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
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for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
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what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
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Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
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I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
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