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HARLOW In this lesson you are going to learn how to get the date and the time.

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Go ahead and download this new File 0 7.

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Getting the time is it from the resource section and put it in your face in projects hold it and then

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ICP

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now you can vary the zip file and open the new folder

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and open the same file call getting a time

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yes run it and see what he does on run compile

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and you get a new ECF at so that's copy these Pfaff correctly copy

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and entered a new dietary type city space and paste upon the idea to check in you find then find a name

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of the FA and presenter to execute and you get the year dash the month which is April dash the day the

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date which is eight year time which is for 0 4 and the second which is 5.

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Press Hiroki and run again and now you see twenty nine seconds I'm a rookie again and now there is a

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second.

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So the format is here month.

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Day our many seconds.

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So let's see how the program works

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so this program is where you learn how to get in debt in time using two Windows API functions get local

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time or get system time.

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Be sure the same produce the same output.

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Over here we create a string of the string which has this format specify it.

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We have a presentation.

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The the the for the first four numbers which is 2 0 2 0 dash then dash is here followed by them month

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dash again followed by the date dash again followed by the Hauer and then colon colon here.

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As you can see colon followed by the mini other colon here followed by the seconds.

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So this is the second.

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So we get here month they our 90 seconds and then under the V.A. cessation we declare and use data data

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type call system.

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It is this structure so a structure is a complex deal.

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And the data type is called system time and the variable created out of it is called This Time.

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So this is a very one in and this is a name on the data structure.

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And over here we call the windows api call gate system time and push one parameter.

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Let's check out the amnesty and see how this is gate system time

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give system time a sense of one parameter the system time data data structure by returns nothing else

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you can see here.

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System tabular structure

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you can take a look.

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Hey Santangelo structure and these are the numbers all of these get us richer

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simply from here you know it only accepts one time it's a.

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So here this is a barometer referring to this is in time and there's also another call get local time

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issue we look at it later which also accepts one barometer.

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So now we want to call this function 0 here.

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And once you kind of function he will return the result.

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Inside the perimeter itself.

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So once you get the result inside the perimeter itself you can get a straight.

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All of these numbers here man they'll the hour minute second in milliseconds.

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And this is very do it.

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We extract the year and save it in the yaks register the essay the year by calling the system time which

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you get back from here and put a dot you put a dot here to access the members of the get out structure

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so w year refers to the year.

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Nevermind refers to a month that video refers to the day here.

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Every hour he refers to the hour every minute refers to me and every seconds before the seconds.

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So he asked me a copy.

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Oh this year.

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Monday how many seconds into their respective registers.

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He actually.

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Easy.

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Yes.

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Yes I am.

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Now here you notice that uh we use a new more instruction called Move 0 x.

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Why do we need to.

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What's the meaning of this 0 x.

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The race is to fill the bits with zeros.

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Why do we need to do that.

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Let's take a look.

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Now we type the.

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And now we know that E X register consists of 4 bytes one.

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This is one by to base three bytes for bytes also known as deal with but the system time since time

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w year w among the gloomy days every hour double meaning and b seconds are all words.

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OK so let me put a knucklehead remark here.

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D e d d word which is for whites for whites

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and since time is a word

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which is two bytes two bytes.

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So when we copy the uh oh what a word.

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This is a word sorry we need to put the prefix and we copy a word which is to base into a for widespread

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use.

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We need to zero up the remaining bytes.

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So after you copy this you will get these two bytes being populated.

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That means you will get something like this.

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The lower two bytes will be say the year 2 2 0.

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But they are higher for bytes really 2 0 8 0 next 0.

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Now we don't know what the original value of EIC is.

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It could be something like this

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it could be something like this some random value from the previous use of the register.

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So when we when we copy this word into this what we actually will get is something like this

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or 2.

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Correct.

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Because we are only copying two bytes so we only copy two bytes into the lower two bytes here and we

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get this.

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But what about the other higher two bytes.

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So this would be wrong clearly.

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So that is why we need to use a more physics function move ze X move the X to copy these two guys and

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put it in the lower two bites of the e register and at the same time he was 0 0 the rest.

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That means what we get is

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like this.

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So there is a meaning on the Z ze X just means to zero on your higher base.

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Okay.

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So not I hope you understand what it means.

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So there is some meaning out there.

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So we zero up in the higher form by had a higher to base.

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So after we have copied how these uh values into the respective registers we are now ready to print.

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So the next uh part of the code is where we push all this into the stack as barometer for the print

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function.

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So reposting in reverse order tell you one.

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So we V1 EDF media seconds TV the last uh part of the string.

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So we push this first then we push ECI EDF.

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Easy s e s e x.

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And finally we push the gate format they get string which is referring to this.

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So when you comprehend we never replace the first form a specified D B X then you print a dash.

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You've a second from a Swiss he PBX been a dash in the top one with his yes.

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Been a day in the forefront.

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He has been a colon.

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Being a fifth y yes I colon and being the last Monday he I and that would give us to this three.

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So this is how it works.

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And finally we have to clean this stack because there are seven pushers so we need to four times seven.

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And so after that you will go to the exit process and the program will end and notice here you have

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to add this extra two lines because we are using these two API functions.

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Right.

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So here you are using get system time guess system time which we import here by now.

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We are also going to do get local time.

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So now I'm going to substitute this code get local time.

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Me and commands and command is.

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And I'm going to compile one more time and then we are going to run the same program.

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So there is some difference in the time here because the local time is based on a country time zone

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system.

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Time is getting a time off your system.

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So that's why the time is slightly different.

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So we can use either one to get the date and the time.

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So try to experiment with this.

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Why not try to do an exercise on your own to write a program that can ask the user to enter name and

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enter from the name you get the first four characters and then combine it with the date in it to create

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a new String.

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See if you can do on your own.

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We can try on your own as an exercise.

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So that's all for this lesson.

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Thank you for watching.