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Hi everyone.



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So in this lesson we will write the code for rating data from a file.



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So let's jump directly into code.



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So this is my file the name of the file is reading from a file guard CPB.



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And this is the folder this containing to file my file would be and read from a file or CBP.



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So this is my file my failure to steal it does open this file so it does contain a lot of data.



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So let us remove some data



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so in all this is the content of the file first string.



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The second one is indeed the value and the third one is also a string.



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So let's remember now the string in the string so first of all I have to include the file stream fine



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stream.



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So now we will use the class input file stream.



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So I f stream you want to create this object ISIS is the name of the object.



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So there's two ways to open the file first is using the constructor.



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So my file dot the x.



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So this file already exists because we created this file in our last session.



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So now we know that first value is actually a string.



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So String name second is actually that all number that is in danger.



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And the third one is actually a string string.



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Basically branch



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now taken input.



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So I office take name as input then take rule number as input.



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Then take branch as input.



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So I'm taking the input and after digging the input let us sprint the content.



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What is the content.



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So we'll see out



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first of all what is the name of the student



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so after the name that does spring.



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Do you remember of the student



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and after William but not at the Sprint the branch of the student



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so their desks are in our file.



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That's another called



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so the name is less net row number is today and the branches CSC.



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So our code is working correctly.



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Now I told you so instead of using the constructor you can do so instead of constructor.



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I also have the function open.



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So let us use that open function.



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So if the stream I office I if it's not open you can give the file name.



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So this is the name of the file is my file not the 60



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so this will also work fine.



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So let's see



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solver code is working.



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Now I told you you have functions like what you can do you can check with that file exist or not.



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So you can write like this.



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So if the file exist then you can say the file is opened



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fighters opened or you can write file exist so let's test this called



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So the file is open.



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So this is working.



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And the second function was is open function so you can also write this also IFRS Dart is unless code



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open and you can print the same thing here



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so file is opened



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so file is open is getting printed two times.



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Correct.



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Now one important thing that I'm missing here is after doing all the work we have to close the file.



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So my book of the file finishes here.



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So let's close the connection.



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So if it's not closed function OK.



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So this is important.



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You have to close the connection.



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So let's see so our code is working.



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Hundred percent correct.



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So this is all about reading from a file.



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So in the next review we will discuss about civilization.



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So I will see you in the next video by.