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OK. So let us begin.

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And the first thing we're gonna do is we're gonna create the user interface

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that would allow the user to choose from the register login and exit options. OK? So

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let's call this function the main function. OK? So I'm gonna say, define main

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brackets, colon.

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And now let us say while true.

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OK. So as long as the program is running,

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let us display the menu options. So

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I'm going to say first of all prints

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and we can say number one.

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Uh let me add my coats right there.

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So I'm gonna say option number one dot register.

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Ok.

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Let's close the colon

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and then let's print out option number two

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to dot log in.

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And then option number three very, very, very boring option

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simply are exits.

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OK?

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All right. Actually, you know what, let's print out

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one other statement at the very top kind of like a welcome message.

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So let's print, let's say welcome

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to the

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uh user

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registration

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uh system.

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OK?

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And there you go. All right. So we've got the options all laid out.

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Now let us prompt the user to provide us with

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an option, which particular option would they want to go for?

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I'm gonna call the variable choice to store

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the particular option.

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So I'm gonna say input and then let us say,

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what would you like to do?

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Ok.

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And there it is. All right.

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So once the user has provided their option,

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we need to create scenarios that cater to each one of them.

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So

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I'm going to start off with the very first one in here and say

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if our choice equals option number one,

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we are going to print,

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let's say registration,

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uh registration

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uh selected.

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OK? Now, obviously nothing else is gonna happen for now, we will add

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the actual functionality later,

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but let's move on to the next option. So I will say

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if

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choice equals

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and then option number two, let's add a colon.

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So what's gonna happen in here? We can say print

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and then we can say uh

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log in

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selected.

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OK?

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And now let us add option number three,

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if choice

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equals

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option number three, add a colon,

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we can just say print and

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exit in

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the system.

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OK?

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And I think this should be fine. So

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remember that we also need to add the break statement

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should in case the user decides to choose an option

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that doesn't exist.

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So I'm going to come in and say break and now

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break,

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enter,

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add a colon

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and now we can print,

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let's say

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uh invalid

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choice. Please try again. OK? I like this

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invalid choice please try again

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and there it is. Ok. So

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let us go ahead right now to run the program.

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So I'm gonna say main and now

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brackets

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and let's see what will happen. Let's go ahead and run the program

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and there you go. Ok, let's try. Option number one.

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Ok. We're just selected, option number two,

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login selected option number three exit in the system. Ok.

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So far so good. We've added the first component of our program.

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We have added the user interface. So join

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in the next video where we will not begin to tackle

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each option at a time starting with the registration function.