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

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{| border = 1
 
{| border = 1
  
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|'''Time'''
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|Time
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|'''Narration'''
+
|Narration
  
 
|-
 
|-
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| 00.01
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| 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 how,  
  
 
|-
 
|-
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| 00.08
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| 00:08
 
|To open a file.  
 
|To open a file.  
 
   
 
   
−
 
 
|-
 
|-
−
| 00.10
+
| 00:10
 
|How to read data from a file.  
 
|How to read data from a file.  
−
 
  
 
|-
 
|-
−
| 00.12
+
| 00:12
 
|How to write data into a file.  
 
|How to write data into a file.  
−
 
  
 
|-
 
|-
−
| 00.15
+
| 00:15
 
|Few examples.  
 
|Few examples.  
  
 
|-
 
|-
−
| 00.17
+
| 00:17
 
|To record this tutorial, I am using,  
 
|To record this tutorial, I am using,  
  
 
|-
 
|-
−
| 00.20
+
| 00:20
 
| Ubuntu Operating System version 11.10,  
 
| Ubuntu Operating System version 11.10,  
−
 
  
 
|-
 
|-
−
| 00.24
+
| 00:24
 
|gcc Compiler version 4.6.1.  
 
|gcc Compiler version 4.6.1.  
−
 
  
 
|-
 
|-
−
| 00.28
+
| 00:28
 
| Let us start with the introduction to  files.  
 
| Let us start with the introduction to  files.  
 +
 
|-
 
|-
−
| 00.31
+
| 00:31
 
|File is a collection of data.  
 
|File is a collection of data.  
−
 
  
 
|-
 
|-
−
|00.34
+
|00:34
 
|It can be a database, a program, a letter or anything.  
 
|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.  
 
|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.'''  
 
|Now let us see an example on '''file handling''' in '''C.'''  
−
 
  
 
|-
 
|-
−
| 00.48
+
| 00:48
 
|I have a written program.   
 
|I have a written program.   
  
 
|-
 
|-
−
| 00.50
+
| 00:50
 
| Let's take a look.  
 
| Let's take a look.  
−
 
  
 
|-
 
|-
−
| 00.51
+
| 00:51
 
|Note that our filename is '''file.c '''
 
|Note that our filename is '''file.c '''
  
 
|-
 
|-
−
| 00.55
+
| 00:55
 
|In this program we will create a file and write data into it.  
 
|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. '''
 
|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. '''
 
|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. '''
 
|'''*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.  
 
|Let us go back to our slides.  
  
 
|-
 
|-
−
|01.33
+
|01:33
 
|Now we will see the syntax to open a file.  
 
|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.  
 
|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.  
 
|filename 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 filename  
  
  
 
|-
 
|-
−
| 01.53
+
| 01:53
 
| And We can also give the extension.  
 
| And We can also give the extension.  
−
 
  
 
|-
 
|-
−
| 01.56
+
| 01:56
 
|Here we can give the mode of the file.  
 
|Here we can give the mode of the file.  
  
 
|-
 
|-
−
|01.59
+
|01:59
 
|Let us see the types of modes :  
 
|Let us see the types of modes :  
 +
 
|-
 
|-
−
| 02.02
+
| 02:02
 
| w - creates '''file''' for read and write.  
 
| 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.  
 
|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.  
 
|We can see that the path is given.  
−
 
  
 
|-
 
|-
−
| 02.23
+
| 02:23
 
|Our file will be created on the '''desktop.'''  
 
|Our file will be created on the '''desktop.'''  
  
  
 
|-
 
|-
−
| 02.27
+
| 02:27
 
|Then we will write the statements into the '''file.'''  
 
|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 an 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. '''
 
|Now click on '''Save. '''
  
 
|-
 
|-
−
| 02.48
+
| 02:48
 
|Let us execute the program.  
 
|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  
  
 
|-
 
|-
−
| 03.00
+
| 03:00
 
|'''gcc space file dot c space hyphen o space file '''
 
|'''gcc space file dot c space hyphen o space file '''
−
 
  
 
|-
 
|-
−
| 03.06
+
| 03:06
 
|Press '''Enter '''
 
|Press '''Enter '''
−
 
  
 
|-
 
|-
−
| 03.07
+
| 03:07
 
|To execute, type '''dot slash'file''' (./file)
 
|To execute, type '''dot slash'file''' (./file)
−
 
  
 
|-
 
|-
−
| 03.11
+
| 03:11
 
| Press '''Enter'''  
 
| Press '''Enter'''  
−
 
  
 
|-
 
|-
−
| 03.13
+
| 03:13
 
|We see the '''file''' is executed.  
 
|We see the '''file''' is executed.  
 +
 
|-
 
|-
−
| 03.15
+
| 03:15
 
|Now we will check it out.  
 
|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.  
 
|Now click on the '''Desktop''' option.  
−
 
  
 
|-
 
|-
−
| 03.25
+
| 03:25
 
|Here is our '''sample.txt''' file.  
 
|Here is our '''sample.txt''' file.  
  
 
|-
 
|-
−
| 03.29
+
| 03:29
 
|This shows that our file is successfully created.  
 
|This shows that our file is successfully created.  
−
 
  
 
|-
 
|-
−
| 03.32
+
| 03:32
 
|Now let us open.  
 
|Now let us open.  
  
 
|-
 
|-
−
| 03.34
+
| 03:34
 
|Double click on the file.  
 
|Double click on the file.  
−
 
  
 
|-
 
|-
−
| 03.36
+
| 03:36
 
|We can see the messages here.  
 
|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 an test example. '''
−
 
  
 
|-
 
|-
−
| 03.44
+
| 03:44
 
|This is how we create a file and write data into it.  
 
|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. '''
 
|Now we will see how to read data from a '''file. '''
 +
 
|-
 
|-
−
| 03.52
+
| 03:52
 
| I have already made the program.  
 
| I have already made the program.  
  
 
|-
 
|-
−
| 03.54
+
| 03:54
 
|I will open it.  
 
|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.  
 
|Let me explain the code now.  
  
 
|-
 
|-
−
| 04.05
+
| 04:05
 
|This is our '''header file. '''
 
|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.  
 
|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.'''
 
|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.'''  
 
|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 equals 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." '''
 
|''' "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. '''
 
|Here, '''EOF''' is the '''end of file. '''
−
 
  
 
|-
 
|-
−
| 04.49
+
| 04:49
 
|It denotes the end of input.  
 
|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.  
 
|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.  
 
|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.  
 
|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. '''
 
|'''putchar''' is used to display a '''character''' on the '''console. '''
  
 
|-
 
|-
−
| 05.22
+
| 05:22
 
|Then it will store the '''characters''' in variable c.  
 
|Then it will store the '''characters''' in variable c.  
−
 
  
 
|-
 
|-
−
| 05.25
+
| 05:25
 
|Here we close the file.  
 
|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. '''
 
|Now click on '''Save. '''
  
 
|-
 
|-
−
| 05.32
+
| 05:32
 
|Let us execute the program.  
 
|Let us execute the program.  
  
 
|-
 
|-
−
| 05.35
+
| 05:35
 
|Come back to the '''terminal. '''
 
|Come back to the '''terminal. '''
  
 
|-
 
|-
−
| 05.37
+
| 05:37
 
|To compile, type  
 
|To compile, type  
  
 
|-
 
|-
−
| 05.38
+
| 05:38
 
|'''gcc space readfile dot c space hyphen o space read '''
 
|'''gcc space readfile dot c space hyphen o space read '''
−
 
  
 
|-
 
|-
−
| 05.45
+
| 05:45
 
|Now press '''Enter '''
 
|Now press '''Enter '''
  
  
 
|-
 
|-
−
| 05.47
+
| 05:47
 
|To execute, type '''./read '''
 
|To execute, type '''./read '''
  
 
|-
 
|-
−
| 05.52
+
| 05:52
 
|The output is displayed as:  
 
|The output is displayed as:  
  
 
|-
 
|-
−
| 05.54
+
| 05:54
 
|'''Welcome to the Spoken-Tutorial. '''
 
|'''Welcome to the Spoken-Tutorial. '''
  
  
 
|-
 
|-
−
| 05.56
+
| 05:56
 
|'''This is an test example. '''
 
|'''This is an test example. '''
  
  
 
|-
 
|-
−
| 05.59
+
| 05:59
 
|This brings us to the end of this tutorial.  
 
|This brings us to the end of this tutorial.  
  
 
|-
 
|-
−
| 06.01
+
| 06:01
 
|Come back to our slides.  
 
|Come back to our slides.  
  
 
|-
 
|-
−
| 06.03
+
| 06:03
 
|Let us summarize.  
 
|Let us summarize.  
  
 
|-
 
|-
−
| 06.04
+
| 06:04
 
|In this tutorial we learnt,  
 
|In this tutorial we learnt,  
−
 
  
 
|-
 
|-
−
| 06.06
+
| 06:06
 
|File handling.  
 
|File handling.  
−
 
  
 
|-
 
|-
−
| 06.08
+
| 06:08
 
|To write data into a file.  
 
|To write data into a file.  
  
 
|-
 
|-
−
| 06.10
+
| 06:10
 
|eg.''' fp = fopen(“Sample.txt”, “w”); '''
 
|eg.''' fp = fopen(“Sample.txt”, “w”); '''
−
 
  
 
|-
 
|-
−
| 06.17
+
| 06:17
 
|To read data from a file.  
 
|To read data from a file.  
  
  
 
|-
 
|-
−
| 06.18
+
| 06:18
 
|eg.''' fp = fopen(“Sample.txt”, “r”); '''
 
|eg.''' fp = fopen(“Sample.txt”, “r”); '''
−
 
  
 
|-
 
|-
−
| 06.25
+
| 06:25
 
|As an assignment,  
 
|As an assignment,  
  
 
|-
 
|-
−
| 06.26
+
| 06:26
 
|Write a program to create a file '''TEST. '''
 
|Write a program to create a file '''TEST. '''
  
  
 
|-
 
|-
−
| 06.30
+
| 06:30
 
|Write your name and address in the file '''TEST. '''
 
|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.
 
|Thank You for joining.

Revision as of 16:03, 23 June 2014

Time Narration
00:01 Welcome to the spoken-tutorial on files in C.
00:05 In this tutorial we will learn how,
00:08 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.
00:51 Note that our filename 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 filename is the name of the file that we want to open or create.
01:49 We can give the path along with the filename


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 an 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
03:00 gcc space file dot c space hyphen o space file
03:06 Press Enter
03:07 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 an 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 equals 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
05:38 gcc space readfile dot c space hyphen o space read
05:45 Now press Enter


05:47 To execute, type ./read
05:52 The output is displayed as:
05:54 Welcome to the Spoken-Tutorial.


05:56 This is an 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.
06:04 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.


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 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

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