PERL/C2/while-do-while-loops/Gujarati - Revision history

PoojaMoolya at 12:20, 28 February 2017

2017-02-28T12:20:28Z

Jyotisolanki at 06:57, 22 October 2014

2014-10-22T06:57:11Z

Jyotisolanki at 11:29, 6 August 2014

2014-08-06T11:29:29Z

Jyotisolanki at 11:10, 6 August 2014

2014-08-06T11:10:24Z

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Jyotisolanki at 07:36, 6 August 2014

2014-08-06T07:36:49Z

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Jyotisolanki: Created page with '{| border=1 |'''Time''' |'''Narration''' |- | 00:01 |Welcome to the spoken tutorial on '''while and do-while''' loops in '''Perl''' |- | 00:06 | In this tutorial, we will lea…'

2014-08-06T06:07:22Z

Created page with '{| border=1 |'''Time''' |'''Narration''' |- | 00:01 |Welcome to the spoken tutorial on '''while and do-while''' loops in '''Perl''' |- | 00:06 | In this tutorial, we will lea…'

New page

{| border=1
|'''Time'''
|'''Narration'''

|-
| 00:01
|Welcome to the spoken tutorial on '''while and do-while''' loops in '''Perl'''

|-
| 00:06
| In this tutorial, we will learn about;

|-
|00:09
|'''while''' loop in '''Perl'''

|-
|00:11
|'''do-while loop in Perl '''

|-
|00:12
| I am using '''Ubuntu Linux12.04''' operating system and '''Perl 5.14.2'''

|-
|00:20
|I will also be using the '''gedit Text Editor'''.

|-
|00:24
|You can use any text editor of your choice.

|-
| 00:28
| You should have basic knowledge of '''Variables '''and''' Comments '''in''' Perl.'''

|-
|00:33
|Knowledge of '''for''' and '''foreach''' loops in '''Perl''' will be an added advantage.

|-
|00:38
|Please go through the relevant spoken tutorials on the spoken tutorial website.

|-
| 00:43
| '''while''' loop in '''Perl'''

|-
|00:45
|The '''while''' loop executes a block of code while a condition is true.

|-
|00:50
|The syntax of '''while''' loop is as follows -

|-
|00:53
|'''while space''' open bracket '''condition''' close bracket

|-
|00:58
|Open curly bracket

|-
|01:00
|Piece of code to be executed while the condition is true

|-
|01:04
|| Close curly bracket

|-
| 01:07
| So, what happens if the condition is not satisfied? Then, the '''while''' loop will exit, without executing the code within, even once.

|-
|01:16
|Now let us look at an example of '''while''' loop.

|-
|01:19
|Open the Terminal and type

|-
|01:22
|'''gedit whileLoop dot pl space ampersand'''

|-
|01:29
|and press '''Enter'''

|-
|01:31
|This will open the '''whileLoop.pl''' file in '''gedit. '''

|-
|01:34
| Now Type the following code

|-
| 01:37
| '''hash exclamation mark slash u s r slash bin slash perl'''

|-
|01:45
|Press '''Enter'''

|-
|01:47
| '''dollar i''' is equal to zero semicolon

|-
| 01:52
| Press '''Enter '''

|-
|01:54
|'''while''' open bracket '''dollar i less than or equal to four''' close bracket space

|-
|02:04
|Open curly bracket press '''Enter''' and type

|-
|02:08
|'''print''' space double quote '''Value of i''' colon, ''' dollar i slash n''' close double quote semicolon

|-
|02:20
|Press '''Enter '''

|-
|02:22
| '''dollar i plus plus semicolon'''

|-
|02:27
| press '''Enter''' and

|-
|02:28
|Close the curly bracket

|-
|02:31
|Let me explain the '''while''' loop in detail.

|-
| 02:33
| We have initialized the variable '''i''' to 0.

|-
|02:38
|Now we have specified the condition for '''while''' loop as '''$i''' less than or equal to 4.

|-
|02:46
| If the '''condition''' is true, the code within the '''while''' loop will get executed.

|-
|02:52
|This means, first time our '''while''' loop will ''' print 'Value of i: 0' ''' on the terminal.

|-
|03:01
|Then the ''' $i++ ''' will increments the value of variable i by one.

|-
| 03:08
| Now again, the loop condition ''' $i<=4''' will be evaluated.

|-
|03:16
|And the loop will exit once the value of i becomes 5.

|-
| 03:22
| In this case, '''while''' loop will get executed for '''i''' equal to 0, 1, 2, 3, 4.

|-
| 03:32
| Press ctrl+s to save the file.

|-
|03:35
|Now, switch to the terminal.

|-
| 03:37
| Type the following to check for any compilation or syntax error -

|-
|03:42
|'''perl hyphen c whileLoop dot pl'''

|-
| 03:47
| and press '''Enter.'''

|-
| 03:49
|The following line will be displayed on the terminal

|-
|03:52
|'''whileLoop.pl syntax OK '''

|-
|03:56
|As there is no compilation or syntax error, we will execute the '''Perl''' script by typing -

|-
| 04:02
|''' perl whileLoop dot pl'''

|-
|04:06
|and press '''Enter'''

|-
|04:09
|The following output will be displayed on the terminal.

|-
| 04:14
| Now, let us look at '''do-while loop'''

|-
| 04:20
| The '''do...while''' statement will always execute the piece of code at-least once.

|-
| 04:25
| It will then check the condition and repeat the loop while the condition is true.

|-
| 04:30
|The syntax for '''do-while ''' loop is as follows -

|-
| 04:34
| '''do''' space

|-
|04:36
|open curly bracket

|-
|04:38
|Piece of code to be executed while the condition is true

|-
|04:42
|close curly bracket then space

|-
|04:45
|'''while''' space within brackets '''condition''' and then semicolon

|-
|04:50
|Open the Terminal and type;

|-
|04:54
| '''gedit doWhileLoop dot pl space ampersand'''

|-
| 05:03
| and then press '''Enter'''

|-
| 05:05
| This will open '''doWhileLoop.pl''' file in '''gedit.'''

|-
|05:09
| Type the following piece of code -
|-
|05:11
|'''hash exclamation mark slash u s r slash bin slash perl''' Press '''Enter'''

|-
|05:21
|'''dollar i equals to zero semicolon press enter'''

|-
|05:27
|'''do''' space

|-
|05:29
|open curly bracket enter type

|-
|05:33
|'''print''' space double quote '''Value of i colon space dollar i slash n''' close double quote semicolon

|-
|05:46
|Press '''Enter '''

|-
|05:48
|'''dollar i plus plus semicolon'''

|-
| 05:52
| press '''enter '''

|-
| 05:54
| close curly bracket

|-
|05:56
|space '''while space''' open bracket '''dollar i less than or equal to four '''

|-
| 06:06
| close bracket semicolon

|-
| 06:10
| Here is the detail explanation of a '''do-while''' loop.

|-
| 06:13
| We have initialized the variable i to 0.

|-
| 06:18
|First time, the '''do-while''' loop will print the output as ''' 'Value of i colon 0' ''' on the terminal without checking for condition

|-
|06:28
|''' $i++ ''' will increment the value of variable i by one each time loop gets executed.

|-
| 06:36
| Second time, the condition '''$i''' less than or equal to 4 will be checked.

|-
| 06:43
| If the condition is true, the loop will get executed again.

|-
|06:48
|In our case, second time the output displayed on terminal will be ''' 'Value of i colon 1' '''.

|-
| 06:57
| The loop will get executed till the condition becomes false that is when variable i becomes 5.

|-
| 07:05
| Press '''ctrl+s''' to '''save''' the file.

|-
|07:09
|Now, switch to terminal and type the following to check for any compilation or syntax error.

|-
|07:16
|'''perl hyphen c doWhileLoop dot pl'''

|-
| 07:21
| and press '''Enter.'''

|-
| 07:23
| The following line will be displayed on the terminal

|-
| 07:26
| '''doWhileLoop.pl syntax OK '''

|-
|07:30
|As there are no compilation or syntax errors, we will now execute the '''Perl''' script.

|-
|07:36
|Type '''perl doWhileLoop dot pl'''

|-
|07:41
|and press '''Enter'''

|-
| 07:43
| The following output will be displayed on the terminal.

|-
|07:48
| Now, let us see the actual difference between '''while''' and '''do-while''' loops.

|-
|07:53
| Open the Terminal, type -

|-
|07:55
| '''gedit loop dot pl space ampersand'''

|-
|08:01
| and press '''Enter'''

|-
|08:03
| This will open '''loop dot pl''' file in '''gedit. '''

|-
|08:07
| Now type the piece of code shown.

|-
|08:12
| We have declared a variable '''count''' and initialized it to zero

|-
|08:19
|In the '''while''' loop condition, we are checking if the variable '''count''' is greater than zero.

|-
|08:29
|The condition is not true. So, the '''while''' loop code will not be executed even once.

|-
|08:36
|In the '''do...while''' loop, we are first executing the code and then checking the condition.

|-
|08:44
|So, the code will be executed at least once.

|-
|08:49
|Then the condition whether the variable '''count''' is greater than zero, is checked.

|-
|08:57
|The condition is not true. So the loop will exit.

|-
|09:02
|Now, press '''ctrl+s''' to save the file.

|-
|09:05
|Now, switch to terminal and type the following to check for any compilation or syntax errors

|-
|09:12
|'''perl hyphen c loop dot pl'''

|-
|09:16
|and press '''Enter.'''

|-
|09:19
|The following line will be displayed on the terminal.

|-
|09:22
|'''loop dot pl syntax OK'''

|-
|09:26
|As there are no compilation or syntax errors, let us execute the '''Perl''' script.

|-
|09:31
|By Typing '''perl loop dot pl'''

|-
|09:36
|and press '''Enter.'''

|-
|09:38
|The following output will be displayed on the terminal.

|-
|09:43
|'''I am in do-while loop'''

|-
|09:46
|Here we can see, there is no output message displaying ''' 'I am in while loop' '''

|-
|09:52
|This message was what we printed inside the while loop.

|-
|09:59
|This implies that,

|-
|10:01
|'''do-while''' loop executes at-least once before evaluating the condition

|-
|10:07
|whereas '''while''' loop does not get executed even once when the condition specified is false.

|-
|10:15
|I hope the difference is clear to you now.

|-
|10:18
|That's all there is to '''while''' and '''do-while''' loops.

|-
|10:22
|Let us summarize.

|-
|10:24
|In this tutorial, we have learnt -

|-
|10:26
|'''while''' loop and '''do-while''' loop in '''Perl'''

|-
|10:29
|using sample programs.

|-
|10:31
|Here is assignment for you -

|-
|10:33
|Print ''' 'Hello Perl' '''

|-
|10:35
|till the count of variable reaches 10

|-
|10:38
|by using '''while''' loop and '''do-while''' loops

|-
|10:41
|Watch the video available at the following link

|-
|10:45
|It summaries the Spoken Tutorial project

|-
|10:49
|If you do not have good bandwidth, you can download and watch it

|-
| 10:53
| The Spoken Tutorial Project Team

|-
| 10:56
| Conducts workshops using spoken tutorials

|-
|11:00
|Gives certificates to those who pass an online test

|-
|11:04
|For more details, please write to contact at spoken hyphen tutorial dot org

|-
| 11:12
| Spoken Tutorial Project is a part of the Talk to a Teacher project

|-
|11:17
|It is supported by the National Mission on Education through ICT, MHRD, Government of India.

|-
|11:24
|More information on this Mission is available spoken hyphen tutorial dot org slash NMEICT hyphen Intro

|-
| 11:36
| Hope you enjoyed this Perl tutorial.

|-
|11:38
|This is Amol Brahmankar signing off.

|-
|11:40
|Thanks for joining.

|}

@@ Line 17: / Line 17: @@
 |-
 |00:11
-|પર્લમા '''''do-while'''  લૂપ
+|પર્લમા '''''do-while'''  લૂપ  હું વાપરી રહ્યી છું ઉબુન્ટુ લીનક્સ 12.04''' ઓપરેટીંગ સીસ્ટમ અને પર્લ 5.14.2'''
-−
-|-
-|00:12
-|હું વાપરી રહ્યી છું ઉબુન્ટુ લીનક્સ 12.04''' ઓપરેટીંગ સીસ્ટમ અને પર્લ 5.14.2'''
 |-
@@ Line 137: / Line 133: @@
 |-
 |02:27
-| Enter (એન્ટર) દબાવો.
+| Enter (એન્ટર) દબાવો. છગડીયા કૌંસને બંધ કરો.
-−
-|-
-|02:28
-| છગડીયા કૌંસને બંધ કરો.
 |-

@@ Line 121: / Line 121: @@
 |-
 |02:04
-|ખુલ્લો છગડીયો કૌંસ enter દબાવો.
+|ખુલ્લો છગડીયો કૌંસ '''enter''' દબાવો.
 |-
@@ Line 249: / Line 249: @@
 |-
 |04:38
-|કન્ડીશન ટ્રૂહોય થવા પર   એક્ઝીક્યુટ કોડનાં  ભાગ.
+|કન્ડીશન ટ્રૂ થવા પર   એક્ઝીક્યુટ કોડનાં  ભાગ.
 |-

@@ Line 511: / Line 511: @@
 |-
 |10:07
-|whereas '''while''' loop does not get executed even once when the condition specified is false.
+| જો આપેલ કન્ડીશન '''false''' હોય તો વ્હાઈલ લૂપ એક વખત પણ એક્ઝીક્યુટ થશે નહી.
 |-
 |10:15
-|I hope the difference is clear to you now.
+| મને આશા છે કે હવે તમને તફાવત ખબર પડી ગયી છે.
 |-
 |10:18
-|That's all there is to '''while''' and '''do-while''' loops.
+| '''while''' અને  '''do-while''' લૂપ્સ પર  બસ આટલું જ.
 |-
 |10:22
-|Let us summarize.
+|સારાંશ માં.
 |-
 |10:24
-|In this tutorial, we have learnt -
+|આ ટ્યુટોરીયલમાં, આપણે શીખ્યા છે -
 |-
 |10:26
-|'''while''' loop and '''do-while''' loop in '''Perl'''
+| લૂપ પર્લમાં ''while''' લૂપ  અને  '''do-while'''
 |-
 |10:29
-|using sample programs.
+|સેમ્પલ પ્રોગ્રામ વાપરતા .
 |-
 |10:31
-|Here is assignment for you -
+|અહીં તમારા માટે અસાઇનમેન્ટ છે -
 |-
 |10:33
-|Print ''' 'Hello Perl' '''
+|''while''' લૂપ  અને  '''do-while''' લૂપ્સ વાપરીને
 |-
 |10:35
-|till the count of variable reaches 10
+| જ્યાં શુધી વેરીએબલ ની ગણતરી 10 શુધી ના પહોચે.
 |-
 |10:38
-|by using '''while''' loop and '''do-while''' loops
+|  ''' 'Hello Perl' ''' પ્રિન્ટ કરો.
 |-
 |10:41
-|Watch the video available at the following link
+|આપેલ લીંક પર ઉપલબ્ધ વિડીયો નિહાળો.
 |-
 |10:45
-|It summaries the Spoken Tutorial project
+|તે સ્પોકન ટ્યુટોરીયલ પ્રોજેક્ટનો સારાંશ આપે છે.
 |-
 |10:49
-|If you do not have good bandwidth, you can download and watch it
+|જો તમારી પાસે સારી બેન્ડવિડ્થ ન હોય તો, તમે વિડીયો ડાઉનલોડ કરીને જોઈ શકો છો.
 |-
 | 10:53
-|  The Spoken Tutorial Project Team
+|  સ્પોકન ટ્યુટોરીયલ પ્રોજેક્ટ ટીમ
 |-
 | 10:56
-| Conducts workshops using spoken tutorials
+|સ્પોકન ટ્યુટોરીયલોનાં ઉપયોગથી વર્કશોપોનું આયોજન કરે છે.
 |-
 |11:00
-|Gives certificates to those who pass an online  test
+|જેઓ ઓનલાઈન પરીક્ષા પાસ કરે છે તેઓને પ્રમાણપત્રો આપે છે.
 |-
 |11:04
-|For more details, please write to contact at spoken hyphen tutorial dot org
+|વધુ વિગતો માટે, કૃપા કરી contact@spoken-tutorial.org પર લખો
 |-
 | 11:12
-|  Spoken Tutorial Project is a part of the Talk to a  Teacher project
+|  સ્પોકન ટ્યુટોરીયલ પ્રોજેક્ટ ટોક ટુ અ ટીચર પ્રોજેક્ટનો એક ભાગ છે.
-−
 |-
 |11:17
-|It is supported by the National Mission on Education through ICT, MHRD, Government of India.
+|જેને આઈસીટી, એમએચઆરડી, ભારત સરકાર મારફતે શિક્ષણ પર નેશનલ મિશન દ્વારા આધાર અપાયેલ છે.
 |-
 |11:24
-|More information on this Mission is available spoken hyphen tutorial dot org slash NMEICT hyphen Intro
+|આ મિશન પર વધુ માહિતી spoken hyphen tutorial dot org slash NMEICT hyphen Intro આ લીંક પર ઉપલબ્ધ છે.
 |-
 | 11:36
-|  Hope you enjoyed this Perl tutorial.
+|  આશા રાખું છું કે તમને આ પર્લ ટ્યુટોરીયલ ગમ્યું હશે.
 |-
 |11:38
-|This is Amol Brahmankar signing off.
+|આઈઆઈટી બોમ્બે તરફથી હું, જ્યોતી સોલંકી વિદાય લઉં છું.
 |-
 |11:40
-|Thanks for joining.
+|જોડાવાબદ્દલ આભાર.
 |}