Difference between revisions of "C-and-C++/C4/File-Handling-In-C/English-timed"

Latest revision as of 14:40, 6 February 2020

Time	Narration
00:01	Welcome to the spoken-tutorial on files in C .
00:05	In this tutorial we will learn:
00:08	How to open a file.
00:10	How to read data from a file.
00:12	How to write data into a file.
00:15	Few examples.
00:17	To record this tutorial, I am using
00:20	Ubuntu Operating System version 11.10,
00:24	gcc Compiler version 4.6.1.
00:28	Let us start with the introduction to files.
00:31	File is a collection of data.
00:34	It can be a database, a program, a letter or anything.
00:39	We can create a file and access it using C.
00:44	Now let us see an example on file handling in C.
00:48	I have a written program.
00:50	Let's take a look Note that our file name is file.c
00:55	In this program we will create a file and write data into it.
01:01	Let me explain the code now.
01:03	This is our header file.
01:05	This is our main() function.
01:07	To define a file variable we use the type FILE.
01:12	The FILE variable is defined under the header stdio.h.
01:19	fp is a pointer to the FILE variable.*
01:22	It will store all the information about the file ,
01:26	like its name, status and current information.
01:31	Let us go back to our slides.
01:33	Now we will see the syntax to open a file.
01:37	Here, the fopen() function opens a stream.
01:42	Then it links the file with the stream.
01:44	file name is the name of the file that we want to open or create.
01:49	We can give the path along with the file name.
01:53	And We can also give the extension.
01:56	Here we can give the mode of the file.
01:59	Let us see the types of modes :
02:02	"w" - creates file for read and write.
02:06	"r" – opens file for reading.
02:09	"a" – writing at the end of the file.
02:12	Now come back to our program.
02:15	Here, we create a Sample.txt file in write mode.
02:20	We can see that the path is given.
02:23	Our file will be created on the desktop.
02:27	Then we will write the statements into the file.
02:30	"Welcome to the spoken-tutorial" and
02:32	"This is a test example".
02:34	fprintf() writes output to the given output stream.
02:39	fclose() closes the file associated with the stream.
02:43	And this is our return statement.
02:46	Now click on Save.
02:48	Let us execute the program.
02:50	Open the terminal window by pressing Ctrl, Alt and T keys simultaneously on your keyboard.
02:59	To compile, type gcc space file dot c space hyphen o space file
03:06	Press Enter To execute, type dot slash file (./file).
03:11	Press Enter.
03:13	We see the file is executed.
03:15	Now we will check it out.
03:17	Let us open the Home folder.
03:20	Click on the Home folder option.
03:22	Now click on the Desktop option.
03:25	Here is our sample.txt file.
03:29	This shows that our file is successfully created.
03:32	Now let us open.
03:34	Double click on the file.
03:36	We can see the messages here.
03:39	Welcome to the Spoken Tutorial.
03:41	This is a test example.
03:44	This is how we create a file and write data into it.
03:48	Now we will see how to read data from a file.
03:52	I have already made the program.
03:54	I will open it.
03:56	In this program, we will read data from our sample.txt file and print the data on the console.
04:03	Let me explain the code now.
04:05	This is our header file.
04:08	This is our main() function.
04:10	Here, a file variable and a pointer to the file variable is defined.
04:15	Then we have declared a character variable c.
04:19	Here, we open the file Sample.txt in read mode.
04:24	The output is stored in fp.
04:27	Then we check the condition-
04:29	"If fp is equal to NULL ".
04:32	If the condition is true then we print the message:
04:36	"File doesn't exist."
04:38	Else, it will check for another condition-
04:41	While c is not equal to EOF.
04:46	Here, EOF is the end of file.
04:49	It denotes the end of input.
04:52	It is a condition where no more data can be read from a data source.
04:57	If the condition is true then it will display the characters from Sample.txt file, on the console.
05:06	Here, getc returns a character from a specified file or stream.
05:12	Now, it will return a character from our Sample.txt file.
05:17	putchar is used to display a character on the console.
05:22	Then it will store the characters in variable c.
05:25	Here we close the file.
05:28	And this is our return statement.
05:30	Now click on Save.
05:32	Let us execute the program.
05:35	Come back to the terminal.
05:37	To compile, type gcc space readfile dot c space hyphen o space read
05:45	Now press Enter .
05:47	To execute, type ./read (dot slash read).
05:52	The output is displayed as:
05:54	Welcome to the Spoken-Tutorial.
05:56	This is a test example.
05:59	This brings us to the end of this tutorial.
06:01	Come back to our slides.
06:03	Let us summarize .In this tutorial we learnt:
06:06	File handling,
06:08	To write data into a file.
06:10	eg. fp = fopen(“Sample.txt”, “w”);
06:17	To read data from a file. eg. fp = fopen(“Sample.txt”, “r”);
06:25	As an assignment- Write a program to create a file TEST.
06:30	Write your name and address in the file TEST.
06:33	Then display it on the console using C Program.
06:37	Watch the video available at the link shown below.
06:40	It summarizes the Spoken Tutorial project.
06:43	If you do not have good bandwidth, you can download and watch it.
06:47	The Spoken Tutorial Project Team:
06:50	Conducts workshops using spoken tutorials.
06:53	Gives certificates to those who pass an online test.
06:57	For more details, please write to, contact@spoken-tutorial.org.
07:03	Spoken Tutorial Project is a part of Talk to a Teacher project.
07:07	It is supported by the National Mission on Education through ICT, MHRD, Government of India.
07:14	More information on this Mission is available at the link shown below.
07:18	This is Ashwini Patil from IIT Bombay, signing off.
07:22	Thank You for joining.

Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14

Difference between revisions of "C-and-C++/C4/File-Handling-In-C/English-timed"

Latest revision as of 14:40, 6 February 2020

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@@ Line 1: / Line 1: @@
 {| border = 1
 |'''Time'''
 |'''Narration'''
 |-
-| 00.01
+| 00:01
-|Welcome to the spoken-tutorial on files in C.
+|Welcome to the spoken-tutorial on ''' files in C''' .
 |-
-| 00.05
+| 00:05
-|In this tutorial we will learn how,
+|In this tutorial we will learn:
 |-
-| 00.08
+| 00:08
-|To open a file.
+| How to open a file.
+|-
+| 00:10
+| How to read data from a file.
 |-
-| 00.10
+| 00:12
-|How to read data from a file.
+| How to write data into a file.
 |-
-| 00.12
+| 00:15
-|How to write data into a file.
+| Few examples.
 |-
-| 00.15
+| 00:17
-|Few examples.
+| To record this tutorial, I am using
 |-
-| 00.17
+| 00:20
-|To record this tutorial, I am using,
+| ''' Ubuntu Operating System''' version 11.10,
 |-
-| 00.20
+| 00:24
-| Ubuntu Operating System version 11.10,
+|''' gcc Compiler''' version 4.6.1.
 |-
-| 00.24
+| 00:28
-|gcc Compiler version 4.6.1.
+| Let us start with the introduction to files.
 |-
-| 00.28
+| 00:31
-| Let us start with the introduction to  files.
-|-
-| 00.31
 |File is a collection of data.
 |-
-|00.34
+|00:34
 |It can be a database, a program, a letter or anything.
 |-
-|00.39
+|00:39
 |We can create a file and access it using C.
 |-
-|00.44
+|00:44
 |Now let us see an example on '''file handling''' in '''C.'''
 |-
-| 00.48
+| 00:48
 |I have a written program.
 |-
-| 00.50
+| 00:50
-| Let's take a look.
+| Let's take a look Note that our file name is '''file.c '''
 |-
-| 00.51
+| 00:55
-|Note that our filename is '''file.c '''
-|-
-| 00.55
 |In this program we will create a file and write data into it.
 |-
-| 01.01
+| 01:01
-|Let me explain the code now
+|Let me explain the code now.
 |-
-| 01.03
+| 01:03
 |This is our '''header file. '''
 |-
-| 01.05
+| 01:05
-|This is our '''main function. '''
+|This is our '''main()''' function.
 |-
-|01.07
+|01:07
 |To define a '''file''' variable we use the type '''FILE. '''
 |-
-| 01.12
+| 01:12
-|The '''FILE variable''' is defined under the '''header stdio.h'''
+|The '''FILE variable''' is defined under the '''header stdio.h'''.
 |-
-| 01.19
+| 01:19
 |'''*fp''' is a pointer to the '''FILE variable. '''
 |-
-| 01.22
+| 01:22
-|It will store all the information about the '''file. '''
+|It will store all the information about the '''file ''',
 |-
-| 01.26
+| 01:26
-|Like its name, status and current information.
+|like its name, status and current information.
 |-
-|01.31
+|01:31
 |Let us go back to our slides.
 |-
-|01.33
+|01:33
 |Now we will see the syntax to open a file.
 |-
-|01.37
+|01:37
-|Here, the '''fopen function''' opens a stream.
+|Here, the '''fopen()''' function opens a stream.
 |-
-|01.42
+|01:42
 |Then it links the '''file''' with the stream.
 |-
-|01.44
+|01:44
-|filename is the name of the file that we want to open or create.
+|file name is the name of the file that we want to open or create.
 |-
-|01.49
+|01:49
-|We can give the path along with the filename
+|We can give the path along with the file name.
 |-
-| 01.53
+| 01:53
 | And We can also give the extension.
 |-
-| 01.56
+| 01:56
 |Here we can give the mode of the file.
 |-
-|01.59
+|01:59
 |Let us see the types of modes :
-|-
-| 02.02
-| w - creates '''file''' for read and write.
+|-
+| 02:02
+| "w" - creates '''file''' for read and write.
 |-
-| 02.06
+| 02:06
-|r – opens ''' file''' for reading.
+| "r" – opens ''' file''' for reading.
 |-
-| 02.09
+| 02:09
-|a – writing at the end of the '''file. '''
+| "a" – writing at the end of the '''file. '''
 |-
-| 02.12
+| 02:12
 |Now come back to our program.
 |-
-| 02.15
+| 02:15
-|Here, we create a '''Sample.txt file''' in '''write''' mode.
+|Here, we create a '''Sample.txt''' file in '''write''' mode.
 |-
-| 02.20
+| 02:20
 |We can see that the path is given.
 |-
-| 02.23
+| 02:23
 |Our file will be created on the '''desktop.'''
 |-
-| 02.27
+| 02:27
 |Then we will write the statements into the '''file.'''
 |-
-| 02.30
+| 02:30
-|''' "Welcome to the spoken-tutorial" ''' and
+| "Welcome to the spoken-tutorial"  and
 |-
-| 02.32
+| 02:32
-|''' "This is an test example" '''
+| "This is a test example".
 |-
-| 02.34
+| 02:34
-| '''fprintf''' writes output to the given output stream.
+| '''fprintf()''' writes output to the given output stream.
 |-
-| 02.39
+| 02:39
-| '''fclose '''closes the file associated with the stream.
+| '''fclose() '''closes the file associated with the stream.
 |-
-| 02.43
+| 02:43
-|And this is our '''return statement. '''
+|And this is our '''return''' statement.
 |-
-| 02.46
+| 02:46
 |Now click on '''Save. '''
 |-
-| 02.48
+| 02:48
 |Let us execute the program.
 |-
-| 02.50
+| 02:50
-|Open the '''terminal window''' by pressing '''Ctrl, Alt''' and '''T''' keys simultaneously on your keyboard
+|Open the '''terminal window''' by pressing '''Ctrl, Alt''' and '''T''' keys simultaneously on your keyboard.
 |-
-| 02.59
+| 02:59
-|To compile, type
+|To compile, type '''gcc space file dot c space hyphen o space file '''
 |-
-| 03.00
+| 03:06
-|'''gcc space file dot c space hyphen o space file '''
+|Press '''Enter ''' To execute, type '''dot slash file''' (./file).
 |-
-| 03.06
+| 03:11
-|Press '''Enter '''
+| Press '''Enter'''.
 |-
-| 03.07
+| 03:13
-|To execute, type '''dot slash'file''' (./file)
+|We see the '''file''' is executed.
 |-
-| 03.11
+| 03:15
-| Press '''Enter'''
-|-
-| 03.13
-|We see the '''file''' is executed.
-|-
-| 03.15
 |Now we will check it out.
 |-
-| 03.17
+| 03:17
-|Let us open the '''home folder.'''
+|Let us open the '''Home''' folder.
 |-
-| 03.20
+| 03:20
-|Click on the '''home folder''' option.
+|Click on the '''Home''' folder option.
 |-
-| 03.22
+| 03:22
 |Now click on the '''Desktop''' option.
 |-
-| 03.25
+| 03:25
 |Here is our '''sample.txt''' file.
 |-
-| 03.29
+| 03:29
 |This shows that our file is successfully created.
 |-
-| 03.32
+| 03:32
 |Now let us open.
 |-
-| 03.34
+| 03:34
 |Double click on the file.
 |-
-| 03.36
+| 03:36
 |We can see the messages here.
 |-
-| 03.39
+| 03:39
-|Welcome to the Spoken Tutorial.
+|'''Welcome to the Spoken Tutorial. '''
 |-
-| 03.41
+| 03:41
-|This is an test example.
+|'''This is a test example. '''
 |-
-| 03.44
+| 03:44
 |This is how we create a file and write data into it.
 |-
-| 03.48
+| 03:48
 |Now we will see how to read data from a '''file. '''
 |-
-| 03.52
+| 03:52
 | I have already made the program.
 |-
-| 03.54
+| 03:54
 |I will open it.
 |-
-| 03.56
+| 03:56
-|In this program we will read data from our '''sample.txt''' file and print the data on the console.
+|In this program, we will read data from our '''sample.txt''' file and print the data on the console.
 |-
-| 04.03
+| 04:03
 |Let me explain the code now.
 |-
-| 04.05
+| 04:05
 |This is our '''header file. '''
 |-
-| 04.08
+| 04:08
-|This is our '''main function. '''
+|This is our '''main()''' function.
 |-
-| 04.10
+| 04:10
 |Here, a '''file variable''' and a '''pointer''' to the '''file variable''' is defined.
 |-
-| 04.15
+| 04:15
 |Then we have declared a '''character variable c.'''
 |-
-| 04.19
+| 04:19
-|Here, we open the '''file Sample.txt''' in '''read''' mode.
+|Here, we open the file '''Sample.txt''' in '''read''' mode.
 |-
-| 04.24
+| 04:24
 |The output is stored in '''fp.'''
 |-
-| 04.27
+| 04:27
-|Then we check the condition.
+|Then we check the condition-
 |-
-| 04.29
+| 04:29
-|If '''fp''' is equals to '''NULL. '''
+|"If '''fp''' is equal to '''NULL''' ".
 |-
-| 04.32
+| 04:32
-|If the condition is '''true,''' then we print the message:
+|If the condition is '''true''' then we print the message:
 |-
-| 04.36
+| 04:36
 |''' "File doesn't exist." '''
 |-
-| 04.38
+| 04:38
-|Else it will check for another condition.
+|Else, it will check for another condition-
 |-
-| 04.41
+| 04:41
-|While '''c ''' is not equal to '''EOF. '''
+|'''While c is not equal to EOF. '''
 |-
-| 04.46
+| 04:46
 |Here, '''EOF''' is the '''end of file. '''
 |-
-| 04.49
+| 04:49
 |It denotes the end of input.
 |-
-| 04.52
+| 04:52
 |It is a condition where no more data can be read from a data source.
 |-
-| 04.57
+| 04:57
-|If the condition is true, then it will display the characters from '''Sample.txt''' file, on the console.
+|If the condition is true then it will display the characters from '''Sample.txt''' file, on the console.
 |-
-| 05.06
+| 05:06
 |Here, '''getc''' returns a '''character''' from a specified file or stream.
 |-
-| 05.12
+| 05:12
 |Now, it will return a '''character''' from our '''Sample.txt''' file.
 |-
-| 05.17
+| 05:17
 |'''putchar''' is used to display a '''character''' on the '''console. '''
 |-
-| 05.22
+| 05:22
 |Then it will store the '''characters''' in variable c.
 |-
-| 05.25
+| 05:25
 |Here we close the file.
 |-
-| 05.28
+| 05:28
-|And this is our '''return statement. '''
+|And this is our '''return''' statement.
 |-
-| 05.30
+| 05:30
 |Now click on '''Save. '''
 |-
-| 05.32
+| 05:32
 |Let us execute the program.
 |-
-| 05.35
+| 05:35
 |Come back to the '''terminal. '''
 |-
-| 05.37
+| 05:37
-|To compile, type
+|To compile, type '''gcc space readfile dot c space hyphen o space read '''
 |-
-| 05.38
+| 05:45
-|'''gcc space readfile dot c space hyphen o space read '''
+|Now press '''Enter '''.
-|-
-| 05.45
-|Now press '''Enter '''
 |-
-| 05.47
+| 05:47
-|To execute, type '''./read '''
+|To execute, type '''./read '''(dot slash read).
 |-
-| 05.52
+| 05:52
 |The output is displayed as:
 |-
-| 05.54
+| 05:54
 |'''Welcome to the Spoken-Tutorial. '''
 |-
-| 05.56
+| 05:56
-|'''This is an test example. '''
+|'''This is a test example. '''
 |-
-| 05.59
+| 05:59
 |This brings us to the end of this tutorial.
 |-
-| 06.01
+| 06:01
 |Come back to our slides.
 |-
-| 06.03
+| 06:03
-|Let us summarize.
+|Let us summarize .In this tutorial we learnt:
 |-
-| 06.04
+| 06:06
-|In this tutorial we learnt,
+| File handling,
 |-
-| 06.06
+| 06:08
-|File handling.
+| To write data into a file.
 |-
-| 06.08
+| 06:10
-|To write data into a file.
+| eg.''' fp = fopen(“Sample.txt”, “w”); '''
 |-
-| 06.10
+| 06:17
-|eg.''' fp = fopen(“Sample.txt”, “w”); '''
+| To read data from a file. eg.''' fp = fopen(“Sample.txt”, “r”); '''
 |-
-| 06.17
+| 06:25
-|To read data from a file.
+|As an assignment- Write a program to create a file '''TEST. '''
-|-
-| 06.18
-|eg.''' fp = fopen(“Sample.txt”, “r”); '''
-|-
-| 06.25
-|As an assignment,
-|-
-| 06.26
-|Write a program to create a file '''TEST. '''
 |-
-| 06.30
+| 06:30
 |Write your name and address in the file '''TEST. '''
 |-
-| 06.33
+| 06:33
-|Then display it on the console using C Program
+|Then display it on the console using C Program.
 |-
-| 06.37
+| 06:37
-|Watch the video available at the link shown below
+|Watch the video available at the link shown below.
 |-
-| 06.40
+| 06:40
-|It summarizes the Spoken Tutorial project
+|It summarizes the Spoken Tutorial project.
 |-
-| 06.43
+| 06:43
-|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.
 |-
-| 06.47
+| 06:47
-|The Spoken Tutorial Project Team
+|The Spoken Tutorial Project Team:
 |-
-| 06.50
+| 06:50
-|Conducts workshops using spoken tutorials
+|Conducts workshops using spoken tutorials.
 |-
-|06.53
+|06:53
-|Gives certificates to those who pass an online test
+|Gives certificates to those who pass an online test.
 |-
-| 06.57
+| 06:57
-|For more details, please write to, contact@spoken-tutorial.org
+|For more details, please write to, contact@spoken-tutorial.org.
 |-
-| 07.03
+| 07:03
-|Spoken Tutorial Project is a part of  Talk to a Teacher project
+|Spoken Tutorial Project is a part of  Talk to a Teacher project.
 |-
-| 07.07
+| 07:07
-|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.
 |-
-| 07.14
+| 07:14
-|More information on this Mission is available at the link shown below
+|More information on this Mission is available at the link shown below.
 |-
-| 07.18
+| 07:18
-| This is Ashwini Patil from IIT Bombay signing off
+| This is Ashwini Patil from IIT Bombay, signing off.
 |-
-| 07.22
+| 07:22
 |Thank You for joining.