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So if I am translating all that, things will be arranged like this and I will be starting from the

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beginning in that fight.

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OK, so that's it on that topic.

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Now moving to the read and write to a file mechanism so you can read from a file or write to the file.

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So while doing C++ programming, if you want to write information to a file, then you will be using

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this operate upstream insertion operator.

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And if you want to read from, in fact, you will be using steam extraction.

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Operator That means you are getting the value from the key or a keyboard.

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Similar to that, you are reading that fire information and writing it to this screen right now to process

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by.

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And it's very simple.

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You can just use this function.

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Roy Glass.

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Now we do have some more things to cover oneness and other handling files or checking for failure in

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finance.

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So suppose I if I am opening a file, then some sometimes that file may not get to open.

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And there that is a Jansa era is coming.

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So if I'm not able to open a file or if I'm not able to write you a file, similar kind of a task and

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occurs with or covered files in C++.

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So in order to handle those things, we are using some clauses or some integers or flags like these.

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So these are the names of some file handling flags, and you can check the value of these flags and

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get to see if the file has any kind of at us.

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So if the EOI.

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So all these things are actually already defined inside the program, so you can just see all this and

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00:01:57,360 --> 00:02:05,370
see that's an exercise for you again, after creating it by writing some things to it, you can try

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coding each of these bits.

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Just write code and see what will happen.

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So what will be the meaning of this if you're a bit equal to one, if you are still doing that and you

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are getting one, then that means the end of violence reached.

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That file was completed reading or writing and the hours that end of the fight.

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If it is zero, it means like we are not in the end of the fire and fail.

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But if there is any kind of input output error and we cannot write something for the file or reading

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something from the file, then this failed will be said to one OK and bad, which also is same.

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But it set fact an input output, a critical error.

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And this is not that, let's put it together.

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That's the difference between very good and bad, and it's like having zero value when the file is actually

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read, read or write successfully, then the value will be zero.

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Now we do have some more useful functions in file, so you can refer to this slide for that.

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And you can see, like if I am inside a file, the problem is like we are not able to see anything in

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00:03:25,080 --> 00:03:25,530
the file.

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So if I am opening a file which is already written and these were the key words of the file.

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00:03:32,280 --> 00:03:36,960
Let me give welcome to happy learning.

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00:03:38,160 --> 00:03:45,180
So this was the content inside my files, and if I have opened the file, then there is a chance that

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00:03:45,180 --> 00:03:47,490
my God, a set is somewhat higher here.

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00:03:48,000 --> 00:03:55,290
So last and I have closed the file by reading until all in this line.

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Then my concern will be here.

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00:03:57,570 --> 00:03:58,940
It will be saved, right?

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00:03:59,250 --> 00:04:01,680
But the problem is this file.

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00:04:01,710 --> 00:04:05,880
We are not able to see this file unless we print out of the fight.

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00:04:06,120 --> 00:04:14,670
So in order to know the position of the binder current position of the blind at the and or like if you

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00:04:14,670 --> 00:04:21,840
want to move the blind at the beginning or to the end, depending on our use case, how you like and

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00:04:21,840 --> 00:04:25,950
probably I want to read the file from the beginning, like, welcome to happy learning.

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00:04:26,310 --> 00:04:29,460
But what will happen if my point I was in this position?

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00:04:29,700 --> 00:04:37,140
Only the content from this position that is on me to learnings will be getting to me right.

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00:04:37,440 --> 00:04:43,560
So in order to read that and to move this blind at the beginning or end on an item, you want a lot

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00:04:43,560 --> 00:04:46,760
of special functions in this programming.

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00:04:47,070 --> 00:04:49,170
So those are actually discussed over here.

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00:04:49,290 --> 00:04:56,850
So DLP means it will give me the current position of that binder and belge means it will get me the

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00:04:56,850 --> 00:04:58,850
composition of that get binder.

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00:04:58,860 --> 00:04:59,600
So that is like.

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00:04:59,700 --> 00:05:06,000
Do buying this one is get behind it and why not put behind it, get by and that is actually used for

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00:05:06,210 --> 00:05:12,750
reading purposes and put Binder is used for writing purposes, so they are to organize this one for

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00:05:12,750 --> 00:05:14,760
reading and one for writing.

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00:05:14,760 --> 00:05:16,740
Let it with this be get binder.

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00:05:16,920 --> 00:05:18,660
And this we put Binder.

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00:05:18,810 --> 00:05:24,390
Then if I'm starting to read the file from here, then it will be like, Welcome to happy landings.

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00:05:24,600 --> 00:05:30,720
But if I'm starting to write the fly, it actually, if I'm trying to change that, I'll use it will

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actually come from here.

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00:05:32,670 --> 00:05:33,540
So that's it.

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Then see, we will help you do that.

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00:05:36,600 --> 00:05:39,030
Put Binder to specify a location.

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00:05:39,300 --> 00:05:40,800
This is the syntax of that.

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00:05:41,250 --> 00:05:46,620
CMG will help you to move the function like move up, get behind it.

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00:05:46,620 --> 00:05:48,210
But that desired location.

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00:05:48,510 --> 00:05:56,460
So what means it, like a single character file and get means it reads as single character from me.

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00:05:57,300 --> 00:06:00,060
And there are a lot of other operating models.

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00:06:00,420 --> 00:06:06,210
Big Eyes Big will help you to read from the beginning of the file or right from the beginning of the

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00:06:06,210 --> 00:06:06,540
file.

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00:06:06,790 --> 00:06:14,580
Askren will return the current position of the blind US and iOS and will help you to reach that end

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00:06:14,580 --> 00:06:15,270
of that file.

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00:06:15,510 --> 00:06:18,330
OK, you can start from then read or write.