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Hello In this session.

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We are going to learn getting inputs.

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So Donna this far from the resource section of this course is lesson 0 to get input.

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Is it

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chaotic and put it in the Fossum projects for the

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and then zip it

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Venditti Yeah.

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Is it far.

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And now you have a new folder open the folder and never click

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so far has the same mean sections you have the comments get input and the comments also seized in this

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file this program prompts a user to enter the name and then prints hello followed by the name.

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So that is who is compiled this program and run it to see what it does.

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Take on run and then click on compare.

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Now if you have a new file called Get input EIC.

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So let's navigate to this folder rightly copy the to open your command prompt and you can clear screen

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by typing see how s and pressing into.

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Now we go back to their pattern directory my type ECD followed by spacebar followed by DOT and another.

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So it is you bring up to the pattern directory and now we're here.

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We can text CV and directly to paste a path daily copy presenter time to view the contents of this folder.

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They should be getting input Casey which is this file that is run this time get press attack key for

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auto completion press attack key again and you get EFA and you run PRESENTER And now he asks for your

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name type your name in presenter and he says hello full by your name.

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So this is the behaviour of the program.

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Now let me explain how it works.

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We have the format specification to tell the assembler it is a pfa console based application.

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The entry point is setting from the start label which is over here

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and we have the include directive to include the library for all Windows programs.

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And here we specify a constant constants are normally specifying how capital letters.

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And here if you want to specify 16 for this content and this commander tell you that this constant is

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constant.

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To specify the maximum size of input strings we are willing to take this constant is used over here.

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When we declare a variable called input string and always been using No it is used here and then we

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have the separator followed by the data section where we specify the hardcoded strings you have two

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strings one string is into name and then you have to enter your name string.

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He had a string is it would message string and you have a mis history has this string Hello followed

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by a place holder the place holder syntax has a percentage sign followed by the type of data that is

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to be placed in here so s means string.

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So when this program runs he will replace this percentage has the string that you specify so the string

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that is going to replace this is coming from here the input string issue we get from the user data allies

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explain then we have a new section called BSA section a media sensation.

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Here's the section where you specify variables which are on the sign so in this case we use the Christian

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map to indicate that the value has not been assigned to these variables.

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Now the difference between the time the assesses data contains those variables which has a values assigned

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to them and b assess contain those variables which is not the same any values yet.

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If you want increase strings we use Navy but over here we can also use VB if you want to create a single

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by VI in this case we want to create 4 by for buying variable for example to store integer numbers so

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D means to the data of table.

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So in programming in Windows API.

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Double what it means for bytes.

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So these are numbers and here we declare a string string which is not enough to input how a name.

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So we call it input string a decline D.B. this out here VB but differences over here we already specify

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the string.

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Oh here we declare a string which is 16 bytes long Max input size is referring to the constant sixteen

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and your plus one image 17.

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And the reason why you plus one is so that he leave a room for the 0 Terminator Nen view P means to

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duplicate to duplicate the empty string over the sixteen bytes so question my here is hang on me zero

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now.

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There's nothing in there so now that you declared the BSA session in a session is the taxation.

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This is entry point.

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So first thing we do is to call the function to show the string to name which is string and it will

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print this line to name or here and tell you name after printing this night and turning your cursor

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will remain on the same line because there is no new line characters here.

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So the is here for you to put your name.

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Then the second part is you would declare handle.

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You will call the gate function gets turned a handle function to create a handle and this is needed

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and because of the next function refer the re file requires a handle.

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That's why you need to create a handle here first so that you can use it in this refile function if

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you only get more details.

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You can search for m s t n type missed here in here 3 far painting the first one and you can see really

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far has these barometers 1 2 3 4 5 barometers which corresponds to these fiber returns.

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And one other parameter is her input handle.

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She can see from here as you learn from the ICC for DVD when you push barometers to.

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You push them in reverse order from the parameter list in the API that's the reason why you see here

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in the API SSA and documentation shows the order of the parameter is up to down top to bottom.

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By then you push it to this day you push it in reverse order from bottom to the top.

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So when you reduce refire first parameter is here corresponding to this

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and your second parameter is here.

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The input string corresponding to LP buffer and a parameter is your no bias to read which corresponds

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to this in the fourth barometer.

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Is here by two right.

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It is corresponding to this.

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And the last one is overlap which we live in is blank now.

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So now we know that even in this to use handle.

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That's why we need to create a handle here using the get standard handle and this input handle here

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is created.

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The clay out here.

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Input handle Ed. Clay has a number so that we can use this here.

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So now let's take a look.

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Head get standard handle by looking at a Microsoft M is the n library.

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Standard handle

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the first result.

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So get ahead get handed.

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Extend a hand to a sense one time to handle this.

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So the return type he's either fashioned sexist the written word is a handle.

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So that's why we're here.

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The past the return value in your ex Navy CV.

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He could handle by moving in there.

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So as you recall every time we call a function in the we know API if we return the result in here X

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so over here can stand at hand.

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Guess their handle and returns the result he X and you want to see if the handle inside this variable

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input handle so that we can use it far as the second parameter.

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Now the barometer for Gates and the he may specify the time will handle and I believe he used his standard

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put handle.

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So that's why you need to call this function now you understand this.

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You can come to the refined so the and use the to handle an input how nervous we obtain from here.

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In order to reach far so let's go back to the MSP and how do the name other function is called refine.

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You actually can read more and just fast.

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In this case we are using this function to read a line from the console.

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So we need this to read your input here.

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So over here whenever you type we'll be safe in this string in blue buffer helping buffer the he's in

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here.

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So there is a reason why we need to delay the input string up here

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so the maximum number of bytes characters is 16

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if your name is longer than 16.

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You have to increase this value here.

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So after reading from the console.

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He will save your name inside the string.

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So now in this input string has got your name.

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Now we move on to the next function.

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We are going to print f now.

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This time we used print f two barometers.

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If you look here your first perimeter is a Hopwood message string which is here.

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Use here and your second barometer is a name in buffering which comes from here.

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So the input string will be replacing your percentage has so when you run when you can't print print

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f Lupin.

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Hello

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because hello comes from the uppermost string and then any priest he ever made history he will substitute

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this percentage as if the second string in boosting and that's why you get union Hello followed by your

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name.

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Okay.

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And then once you've finished then you're supposed to clean this text.

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So here is a mistake here.

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This I should be and as to why the Times too because you're losing to barometers to the stack.

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Each barometer that you push through minus 4 bytes from the stack address.

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So when you push to carry this a minus invites two times voice.

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So you have to add back to these words.

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So this one pushes one you would use it for both use pushes and energy with a fallback by so totally

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invites.

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So this is how you box for peanuts.

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Notice that for the Microsoft API functions you don't have to enlist a pony for a C functions which

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is non make so API you need to clean this thing.

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So if you have three parameters you had to put for those three or four parameters push here to put forth

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and so on.

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And finally you come to their last function issue exit process and the program ends.

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Now notice here you have to have the parts because you are using standard Hinder and refile and standard

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handler comes from the country too.

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So you need to end is and then refile also comes from country 2.

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So you need to add another line here sir.

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So this is how the input string works.

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And feel free to experiment with this.

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I modify to change any number of strings and you want to show a number of substitution strings and you

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want these.

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So yes I for this video in lesson.

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Thank you.

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How I see you in a song.