Advanced-C++/C2/Static-Members/English-timed - Revision history

Pratik kamble at 07:28, 23 March 2017

2017-03-23T07:28:09Z

Pratik kamble at 07:27, 23 March 2017

2017-03-23T07:27:41Z

Pratik kamble at 09:19, 7 March 2017

2017-03-07T09:19:23Z

Sandhya.np14 at 12:27, 27 June 2015

2015-06-27T12:27:47Z

Sandhya.np14 at 12:27, 27 June 2015

2015-06-27T12:27:09Z

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PoojaMoolya at 09:05, 27 October 2014

2014-10-27T09:05:30Z

PoojaMoolya at 05:49, 13 October 2014

2014-10-13T05:49:16Z

Ranjana at 10:56, 12 August 2014

2014-08-12T10:56:44Z

PoojaMoolya at 10:16, 3 July 2014

2014-07-03T10:16:59Z

PoojaMoolya: Created page with ' {| border = 1 | '''Time''' | '''Narration''' |- | 00:01 | Welcome to the spoken tutorial on '''static members''' in C++. |- | 00:06 | In this tutorial we will learn, |- |…'

2014-07-03T10:16:37Z

Created page with ' {| border = 1 | '''Time''' | '''Narration''' |- | 00:01 | Welcome to the spoken tutorial on '''static members''' in C++. |- | 00:06 | In this tutorial we will learn, |- |…'

New page

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

|-
| 00:01
| Welcome to the spoken tutorial on '''static members''' in C++.

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

|-
| 00:09
|''Static keyoword.'''

|-
| 00:10
|'''Static variable'''

|-
| 00:12
|'''Static function'''

|-
| 00:14
|We will do this through an examples.

|-
| 00:17
| To record this tutorial, I am using

|-
| 00:20
| '''Ubuntu OS '''version 11.04

|-
| 00:24
| '''g++ compiler '''v. 4.6.1

|-
| 00:29
| Let us start with an introduction to '''static'''.

|-
| 00:33
| '''Static variables''' are initialized to zero before the first '''object''' is created.

|-
| 00:39
|Only one copy of the static variable exists for the whole program.

|-
| 00:44
|All the objects will share that variable.

|-
| 00:47
|It will remain in the memory till the end of the program.

|-
|00:52
| '''Static functions'''

|-
| 00:54
| A static function may be called by itself without depending on any object.

|-
| 01.00
| To access a static function we use,

|-
| 01.03
| classname :: (scope resolution operator) and the staticfunction();

|-
| 01:09
| Let us see an example on static memebers.

|-
| 01:13
| I have already typed the code on the editor.

|-
| 01:17
| Note that our file name is '''static dot cpp'''

|-
| 01:21
| Let me explain the code now.

|-
| 01:24
|This is our headerfile as '''iostream'''

|-
|01:27
| Here we are using the '''std namespace'''

|-
| 01:31
| Then we have '''class''' '''statex.'''

|-
| 01:34
| In this we have a non-static variable as x declared as '''private.'''

|-
| 01:40
| Then we have a static variable '''sum''' declared as '''public.'''

|-
| 01:45
| This is our '''constructor statex.'''

|-
| 01:48
| In this we have incremented''' sum.'''

|-
| 01:52
| Then the value of''' sum '''is stored in''' x.'''

|-
| 01:55
| Here we have a '''static function''' '''stat.'''

|-
| 01:58
| In this we print the''' sum.'''

|-
| 02:01
|Then we have''' function number.'''

|-
| 02:04
| Here we print the number''' x'''

|-
| 02:07
| The class is closed here.

|-
| 02:10
| To declare the '''static variable''' globally we use scope resolution operator.

|-
| 02:15
| To access a''' static variable '''we write as:

|-
| 02:19
| '''datatype classname scope resolution operator and static variable name.'''

|-
| 02:26
| Now the storage is allocated to variable '''sum'''.

|-
| 02:31
| It is initialized to '''0'''.

|-
| 02:33
| This is our '''main function.'''

|-
| 02:35
| Here we create objects of class '''statex.'''

|-
| 02:39
| As '''o1''', '''o2''' and '''o3.'''

|-
| 02:42
| Then we call the function number using the objects ''' o1, o2 and o3.'''

|-
| 02:49
| '''Static''' function '''stat''' is accessed here.

|-
| 02:52
| Using the '''class name '''and the ''' scope resolution operator.'''

|-
| 02:56
| Here we print the static variable''' sum.'''

|-
| 03:00
| And this is the '''return''' statement.

|-
| 03:03
| Let us execute the program.

|-
| 03:05
| Open the terminal window by pressing '''Ctrl, Alt and T '''keys simultaneously on your keyboard.

|-
| 03:13
| To compile type

|-
| 03:15
| '''g++ space static dot cpp space hyphen o space stat'''. Press Enter

|-
| 03:24
| Type '''./stat''' (dot slash stat). Press Enter

|-
| 03:28
| The output is displayed as,

|-
| 03:30
| '''Number is: 0, 1, 2 '''

|-
| 03:33
| '''Result is: 3'''

|-
| 03:35
| '''Now static var sum is 3'''

|-
|03:38
| Now I will explain the output:

|-
| 03:39
| Let me resize the window.

|-
| 03:42
| Here, First the value of''' number '''is''' 0 ie. x is 0.'''

|-
| 03:49
| The first object gives the value as''' 0'''

|-
| 03:53
| Then we have the value as '''1''' ie.''' x =1'''

|-
| 03:58
| The second object gives the value as''' 1'''

|-
| 04:01
| And the third object gives the value as''' 2'''

|-
| 04:05
| Then we call the '''stat''' function which gives the value of '''sum'''.

|-
| 04:10
| '''Result is sum.'''

|-
| 04:13
| Here sum is incremented and stored in''' x.'''

|-
| 04:18
| Hence this will gived the value as''' 3.'''

|-
| 04:22
| Thus the final output we have is.

|-
| 04:25
| '''Static var sum is 3.'''

|-
| 04:28
| Now let us create another object here as '''o4.'''

|-
| 04:34
| I will call the function '''number''' using the''' object o4.'''

|-
| 04:43
| '''Click on Save'''

|-
| 04:45
| Let us execute.

|-
| 04:48
| Press the arrow key twice.

|-
| 04:51
| Again Press the arrow key twice.

|-
| 04:54
| You can see that '''Result is 4.'''

|-
| 04:57
| '''Now static var sum is 4'''

|-
| 05:00
| As the 4th object is created.

|-
| 05:03
| This brings us to the end of this tutorial.

|-
| 05:06
| Come back to the slides.

|-
|05:08
| Let us summarize:

|-
| 05:10
| In this tutorial, we learned,

|-
| 05:12
| '''static keyword.'''

|-
| 05:13
| '''Static variable'''

|-
| 05:15
| '''eg. static int sum;'''

|-
| 05:18
| '''Static function.'''

|-
| 05:19
| '''eg. static void stat()'''

|-
| 05:22
| As an assignment

|-
| 05:23
| Create a class that declares a '''static variable.'''

|-
| 05:26
| Decrement the variable.

|-
| 05:29
| And print the value.

|-
| 05:31
| Watch the video available at the link shown

|-
| 05:34
| It summarizes the Spoken Tutorial project

|-
| 05:37
| If you do not have good bandwidth, you can download and watch it

|-
| 05:41
| The Spoken Tutorial Project Team

|-
| 05:44
| Conducts workshops using spoken tutorials

|-
| 05:47
| Gives certificates to those who pass an online test

|-
| 05:51
| For more details, please write to, contact@spoken-tutorial.org

|-
| 05:58
| Spoken Tutorial Project is a part of the Talk to a Teacher project

|-
| 06:02
| It is supported by the National Mission on Education through ICT, MHRD, Government of India

|-
| 06:08
| More information on this Mission is available at the link shown below

|-
|06:13
| This is Ashwini Patil from IIT Bombay signing off

Thank You for joining.

|}

@@ Line 329: / Line 329: @@
 |-
 | 05:12
-|'''static keyword''''''static variable'''
+|'''static keyword''' '''static variable'''
 |-

@@ Line 13: / Line 13: @@
 |-
 | 00:09
-|* '''Static''' keyword. '''Static variable'''
+|'''Static''' keyword. '''Static variable'''
 |-
 | 00:12
-|* '''Static function'''.
+|'''Static function'''.
 |-
@@ Line 29: / Line 29: @@
 |-
 | 00:20
-|* '''Ubuntu OS '''version '''11.10'''
+|'''Ubuntu OS '''version '''11.10'''
 |-
 | 00:24
-|* '''g++ compiler '''version '''4.6.1'''
+|'''g++ compiler '''version '''4.6.1'''
 |-
@@ Line 64: / Line 64: @@
 |-
-| 01.00
+| 01:00
 | To access a static function, we use-
 |-
-| 01.03
+| 01:03
 | '''classname :: (scope resolution operator)''' and the '''staticfunction();'''
@@ Line 229: / Line 229: @@
 |-
 |03:38
-|  Now, I will explain the output.
+|  Now, I will explain the output. Let me resize the '''window'''.
-−
-|-
-| 03:39
-| Let me resize the '''window'''.
 |-
@@ Line 333: / Line 329: @@
 |-
 | 05:12
-|* '''static keyword'''
+|'''static keyword''''''static variable'''
-−
-|-
-| 05:13
-|* '''static variable'''
 |-
@@ Line 345: / Line 337: @@
 |-
 | 05:18
-|* '''static function.'''
+|'''static function.''' '''eg. static void stat()'''
-−
-|-
-| 05:19
-| '''eg. static void stat()'''
 |-
 | 05:22
-|  As an assignment-
+|  As an assignment-  Create a '''class''' that declares a '''static variable''',
-−
-|-
-| 05:23
-| Create a '''class''' that declares a '''static variable''',
 |-

@@ Line 1: / Line 1: @@
 {| border = 1
 | '''Time'''
@@ Line 15: / Line 13: @@
 |-
 | 00:09
-|* '''Static''' keyword.
+|* '''Static''' keyword. '''Static variable'''
-−
-|-
-| 00:10
-|* '''Static variable'''
 |-
@@ Line 30: / Line 24: @@
 |-
-|  00:17
+|00:17
-|  To record this tutorial, I am using:
+|To record this tutorial, I am using:
 |-
@@ Line 271: / Line 265: @@
 |-
 | 04:13
-| Here, '''sum''' is incremented and stored in 'x.'
+| Here, '''sum''' is incremented and stored in '''x.'''
 |-
@@ Line 303: / Line 297: @@
 |-
 | 04:48
-| Press the 'up arrow' key twice.
+| Press the '''up arrow''' key twice.
 |-
 | 04:51
-| Again press the 'up arrow' key twice.
+| Again press the '''up arrow''' key twice.
 |-
@@ Line 415: / Line 409: @@
 |-
 |06:13
-| This is Ashwini Patil from IIT Bombay, signing off.
+| This is Ashwini Patil from IIT Bombay, signing off.Thank You for joining.
-−
 Thank You for joining.
 |}

@@ Line 15: / Line 15: @@
 |-
 | 00:09
-|* '''Static keyoword.'''
+|* '''Static''' keyword.
 |-

@@ Line 1: / Line 1: @@
@@ Line 36: / Line 35: @@
 |-
 | 00:20
-| '''Ubuntu OS '''version 11.04
+| '''Ubuntu OS '''version 11.10
 |-

@@ Line 243: / Line 243: @@
 |-
 | 03:42
-| Here, First the value of''' number '''is''' 0''' ie.''' x is 0.'''
+| Here, First the value of''' number '''is''' 0''' ie.''' x''' is '''0.'''
 |-
@@ Line 275: / Line 275: @@
 |-
 | 04:18
-| Hence this will gived the value as''' 3.'''
+| Hence this will give the value as''' 3.'''
 |-
@@ Line 303: / Line 303: @@
 |-
 | 04:48
-| Press the arrow key twice.
+| Press the up arrow key twice.
 |-
 | 04:51
-| Again Press the arrow key twice.
+| Again Press the up arrow key twice.
 |-

@@ Line 51: / Line 51: @@
 |-
 | 00:39
-|Only one copy of the static variable  exists for the whole program.
+|Only one copy of the '''static variable''' exists for the whole program.
 |-
@@ Line 147: / Line 147: @@
 |-
 | 02:10
-|  To declare the '''static variable''' globally we use scope resolution operator.
+|  To declare the '''static variable''' globally we use '''scope resolution operator.'''
 |-
@@ Line 155: / Line 155: @@
 |-
 | 02:19
-| '''datatype classname scope resolution operator and static variable name.'''
+| '''datatype classname scope resolution operator''' and '''static variable name.'''
 |-
@@ Line 179: / Line 179: @@
 |-
 | 02:42
-|  Then we call the function number using the objects ''' o1, o2 and o3.'''
+|  Then we call the function number using the objects ''' o1, o2''' and '''o3.'''
 |-
@@ Line 191: / Line 191: @@
 |-
 | 02:56
-| Here we print the static variable''' sum.'''
+| Here we print the '''static variable sum.'''
 |-
@@ Line 211: / Line 211: @@
 |-
 | 03:15
-| '''g++ space static dot cpp space hyphen o space stat'''. Press Enter
+| '''g++ space static dot cpp space hyphen o space stat'''. Press '''Enter'''
 |-
@@ Line 243: / Line 243: @@
 |-
 | 03:42
-| Here, First the value of''' number '''is''' 0 ie. x is 0.'''
+| Here, First the value of''' number '''is''' 0''' ie.''' x is 0.'''
 |-
@@ Line 295: / Line 295: @@
 |-
 | 04:43
-| '''Click on Save'''
+| Click on '''Save'''
 |-

@@ Line 1: / Line 1: @@
@@ Line 17: / Line 16: @@
 |-
 | 00:09
-|''Static keyoword.'''
+|'''Static keyoword.'''
 |-