Difference between revisions of "Advance-C/C2/Command-line-arguments-in-C/English-timed"

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| 00:01
 
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|Hello and welcome to the spoken tutorial on''' Command Line Arguments.'''
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|Hello and welcome to the '''spoken tutorial''' on''' Command Line Arguments.'''
  
 
|-
 
|-
 
| 00:07
 
| 00:07
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|In this tutorial, we will learn about  '''main function with arguments''' with an example.
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|In this tutorial, we will learn about  '''main''' function with '''arguments''', with an example.
  
 
|-
 
|-
 
| 00:15
 
| 00:15
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|For this tutorial I am using  '''Ubuntu Operating system version 11.10''' and  '''gcc Compiler version 4.6.1 on Ubuntu'''
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|For this tutorial, I am using  '''Ubuntu Operating system''' version '''11.10''' and  '''gcc Compiler''' version '''4.6.1''' on Ubuntu.
  
 
|-
 
|-
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| 00:33
 
| 00:33
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| If not, for relevant tutorials please visit our website which is as shown.
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| If not, for relevant tutorials, please visit our website which is as shown.
  
 
|-
 
|-
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|-
 
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| 00:45
 
| 00:45
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|Filename is '''main hyphen with hyphen args.c'''
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|Filename is ''''main hyphen with hyphen args.c''''.
  
 
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|-
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| 00:53
 
| 00:53
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|These are the '''header files.''' '''stdio.h '''defines '''core input''' and '''output functions'''.
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|These are the '''header''' files. '''stdio.h '''defines '''core input''' and '''output''' functions.
  
 
|-
 
|-
 
| 01:01
 
| 01:01
 
|'''stdlib.h header file''' defines-
 
|'''stdlib.h header file''' defines-
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* '''Numeric conversion function'''.
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* '''Numeric conversion function'''
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* '''Pseudo-random numbers'''.
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* '''Pseudo-random numbers'''
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* '''Generation function'''.
+
* '''Generation function'''
−
* '''Memory allocation'''.
+
* '''Memory allocation'''
 
* '''Process control functions'''.
 
* '''Process control functions'''.
  
 
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|-
 
|01:16
 
|01:16
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|This is our '''main function.''' Inside this, we have passed '''two arguments'''-
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|This is our ''''main' function.''' Inside this, we have passed two '''arguments'''-
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'''int argc,  char  asterisk asterisk argv''' (**argv)
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'''int argc,  char  asterisk asterisk argv''' (**argv).
  
 
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| 01:53
 
| 01:53
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|'''Index 2''' will be the second '''argument''' passed to the program. And so on.
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|'''Index 2''' will be the second '''argument''' passed to the program and so on.
  
 
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| 02:05
 
| 02:05
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|This will display the '''first argument''' passed to the program.
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|This will display the first argument passed to the program.
  
 
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| 02:13
 
| 02:13
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|'''While condition''' will decrement the number of '''arguments'''.
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|''''while' condition''' will decrement the number of '''arguments'''.
  
 
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| 02:23
 
| 02:23
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|At the end we have''' return 0 '''statement.
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|At the end, we have''' return 0 '''statement.
  
 
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| 02:35
 
| 02:35
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|Type:''' gcc space main hyphen with hyphen args.c space hyphen o space args'''. Press''' Enter'''
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|Type:''' gcc space main hyphen with hyphen args.c space hyphen o space args'''. Press''' Enter'''.
  
 
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|-
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| 02:54
 
| 02:54
 
|You can see the output as:
 
|You can see the output as:
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'''Total number of arguments are 1 '''
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"Total number of arguments are 1".
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+
"The first argument is null"
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'''The first argument is null '''
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"arguments are ./args"
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+
−
'''arguments are ./args '''
+
  
 
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| 03:11
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|'''Total number of arguments are 1''' as the '''zeroth argument''' is the executable filename itself.
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|'''Total number of arguments are 1''' as the zeroth argument is the executable filename itself.
  
 
|-
 
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| 03:19
 
| 03:19
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|'''The first argument is (null) '''as we have not passed any '''argument''' to the program.  
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|'''The first argument is (null) '''as we have not passed any argument to the program.  
  
 
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| 03:26
 
| 03:26
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|'''Arguments''' are only one ie. '''dot slash args'''
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|'''Arguments''' are only one i.e. '''dot slash args'''.
  
 
|-
 
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| 03:31
 
| 03:31
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|Now let us execute again
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|Now let us execute again.
  
 
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| 03:34
 
| 03:34
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|Press the uparrow key '''space''' type '''Sunday space Monday space Tuesday'''. Press '''Enter'''
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|Press the up-arrow key '''space''' type: '''Sunday space Monday space Tuesday'''. Press '''Enter'''
  
 
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'''The first argument is Sunday '''
 
'''The first argument is Sunday '''
  
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'''Argument are ./args ''' '''Sunday Monday ''' and '''Tuesday '''.
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'''Arguments are ./args ''' '''Sunday Monday ''' and '''Tuesday '''.
  
 
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|The '''first argument''' is '''Sunday '''
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|The '''first argument''' is '''Sunday '''.
  
 
|-
 
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| 04:17
 
| 04:17
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|The '''zeroeth argument''' always gives executable filename.
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|The '''zeroth argument''' always gives executable filename.
  
 
|-
 
|-
 
| 04:22
 
| 04:22
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|'''Sunday''' is assigned to '''first argument'''.
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|'''Sunday''' is assigned to first argument.
  
 
|-
 
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| 04:25
 
| 04:25
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|'''Monday '''is assigned to '''second argument.'''
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|'''Monday '''is assigned to second argument.
  
 
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| 04:28
 
| 04:28
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|'''Tuesday '''is assigned to '''third argument'''.  
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|'''Tuesday '''is assigned to third argument.  
  
 
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| 04:37
 
| 04:37
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|In this tutorial we learnt,
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|In this tutorial, we learnt:
 
* '''Command line arguments'''
 
* '''Command line arguments'''
 
* '''argc'''
 
* '''argc'''
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* '''argv'''
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* '''argv'''.
  
 
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| 04:51
 
| 04:51
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|Watch the video available at the link shown below
+
|Watch the video available at the link shown below.
  
 
|-
 
|-
 
| 04:54
 
| 04:54
−
|It summarises the Spoken Tutorial project  
+
|It summarizes the Spoken Tutorial project.
  
 
|-
 
|-
 
| 04:57
 
| 04:57
−
|If you do not have good bandwidth, you can download and watch it
+
|If you do not have good bandwidth, you can download and watch it.
  
 
|-
 
|-
 
| 05:02
 
| 05:02
−
|The Spoken Tutorial Project Team , Conducts workshops using spoken tutorials  
+
|The Spoken Tutorial Project team: * Conducts workshops using spoken tutorials.
  
 
|-
 
|-
 
| 05:08
 
| 05:08
−
|Gives certificates to those who pass an online test. For more details, please write to '''contact@spoken-tutorial.org'''
+
|* Gives certificates to those who pass an online test. For more details, please write to '''contact@spoken-tutorial.org'''
  
 
|-
 
|-
 
| 05:18
 
| 05:18
−
|Spoken Tutorial Project is a part of the Talk to a Teacher project
+
|'''Spoken Tutorial''' Project is a part of the '''Talk to a Teacher''' project.
  
 
|-
 
|-
 
| 05:22
 
| 05:22
−
|It is supported by the National Mission on Education through ICT, MHRD, Government of India
+
|It is supported by the National Mission on Education through ICT, MHRD, Government of India.
  
 
|-
 
|-
 
| 05:30
 
| 05:30
−
|More information on this Mission is available at: '''http://spoken-tutorial.org\NMEICT-Intro'''
+
|More information on this mission is available at: '''http://spoken-tutorial.org\NMEICT-Intro'''.
  
 
|-
 
|-
 
| 05:36
 
| 05:36
−
|This is Ashwini Patil from IIT Bombay signning off.
+
|This is Ashwini Patil from IIT Bombay, signning off.
 
Thank you for joining.
 
Thank you for joining.
  
 
|}
 
|}

Revision as of 12:11, 3 December 2015

Time
Narration
00:01 Hello and welcome to the spoken tutorial on Command Line Arguments.
00:07 In this tutorial, we will learn about main function with arguments, with an example.
00:15 For this tutorial, I am using Ubuntu Operating system version 11.10 and gcc Compiler version 4.6.1 on Ubuntu.
00:27 To follow this tutorial, you should be familiar with C tutorials.
00:33 If not, for relevant tutorials, please visit our website which is as shown.
00:39 Let us start with our program. I have a code file. I will open it.
00:45 Filename is 'main hyphen with hyphen args.c'.
00:50 Let me explain the program.
00:53 These are the header files. stdio.h defines core input and output functions.
01:01 stdlib.h header file defines-
  • Numeric conversion function
  • Pseudo-random numbers
  • Generation function
  • Memory allocation
  • Process control functions.
01:16 This is our 'main' function. Inside this, we have passed two arguments-

int argc, char asterisk asterisk argv (**argv).

01:28 “argc” refers to the number of command line arguments passed to the program.
01:34 This includes the actual name of the program.
01:38 argv contains actual arguments starting from index 0.
01:44 Index 0 is the name of the program.
01:48 Index 1 will be the first argument passed to the program.
01:53 Index 2 will be the second argument passed to the program and so on.
01:59 This statement will display the total number of arguments passed to the program.
02:05 This will display the first argument passed to the program.
02:09 1 represents the argument at index 1.
02:13 'while' condition will decrement the number of arguments.
02:18 This statement will print all the arguments passed to the program.
02:23 At the end, we have return 0 statement.
02:27 Let us open the terminal by pressing Ctrl+Alt+T keys simultaneously on your keyboard.
02:35 Type: gcc space main hyphen with hyphen args.c space hyphen o space args. Press Enter.
02:49 Type: dot slash args. Press Enter.
02:54 You can see the output as:

"Total number of arguments are 1". "The first argument is null" "arguments are ./args"

03:06 Command line arguments are given during execution.
03:11 Total number of arguments are 1 as the zeroth argument is the executable filename itself.
03:19 The first argument is (null) as we have not passed any argument to the program.
03:26 Arguments are only one i.e. dot slash args.
03:31 Now let us execute again.
03:34 Press the up-arrow key space type: Sunday space Monday space Tuesday. Press Enter
03:47 Now we can see the output:

Total number of arguments are 4

The first argument is Sunday

Arguments are ./args Sunday Monday and Tuesday .

04:04 Let me explain the output.
04:06 Total number of arguments are 4 as ./args, Sunday, Monday and Tuesday.
04:14 The first argument is Sunday .
04:17 The zeroth argument always gives executable filename.
04:22 Sunday is assigned to first argument.
04:25 Monday is assigned to second argument.
04:28 Tuesday is assigned to third argument.
04:31 This brings us to the end of this tutorial. Let us summarize.
04:37 In this tutorial, we learnt:
  • Command line arguments
  • argc
  • argv.
04:45 As an assignment, execute the program with different arguments.
04:51 Watch the video available at the link shown below.
04:54 It summarizes the Spoken Tutorial project.
04:57 If you do not have good bandwidth, you can download and watch it.
05:02 The Spoken Tutorial Project team: * Conducts workshops using spoken tutorials.
05:08 * Gives certificates to those who pass an online test. For more details, please write to contact@spoken-tutorial.org
05:18 Spoken Tutorial Project is a part of the Talk to a Teacher project.
05:22 It is supported by the National Mission on Education through ICT, MHRD, Government of India.
05:30 More information on this mission is available at: http://spoken-tutorial.org\NMEICT-Intro.
05:36 This is Ashwini Patil from IIT Bombay, signning off.

Thank you for joining.

Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14

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