All language subtitles for 3. Structure Variables

OK, so now what we are going to do is to talk about how we can declare a variable of some structural

type we've that we've just defined in one of our previous videos.

OK, so if you want some strict, easy way to understand the rules and how you can create a variable

of a defined structure template, here it is.

So first of all, you use this struct, OK, you first use the word struct, then you specify the template,

OK, the template structure name that you want to use, just like we've created previously structured

template point's structure, template daid and structure template address, for example.

So for example, if we have let's wait a minute where it is here.

Not a pen but a laser pointer.

So basically if previously we had created our data structure and we want to create a data structure

variable to declare it, what we are going to use is simply struct.

OK, just like the formula written here.

OK, so that this will be our that will be our formula.

OK, on how to declare a variable struct and then what we are going to have is struct struct is OK,

the structure name that we've just created in the previous video.

OK, it was just something like struct Dade Curly brackets and it was in today int month and into year.

OK, if you do not remember exactly what it was, you may go to the previous video and to make sure

of that.

And basically there you go.

You have created two variables of struct date type, each of them.

OK, we will take a look.

Let's say just that my date one.

OK, so that's the variable.

And each of these variables contain is part of them are some integers, OK, which are just these smaller

boxes representing the day, the month in the year.

Awesome.

So here you go.

The variable name like this one.

OK, so that's the variable we created in this variable is of type struct date.

And we know that strike date is a template for structure with three fields.

The first one is day, the second is month and the third is year.

Amazing.

So what we created is a new variable called My Date one with three fields.

Just make sure that you notice that all of them are not yet initialized.

OK, so we don't know what will be their values, just like you created in day, in month and in year.

You don't know they are values that they are not yet have been initialized.

All right.

And now what I want to show you guys is how we can access to variables fields.

So, for example, we created some variable of some new type.

OK, where did it go?

So we created this variable, my each one with these three fields.

And let's think of these might add one is a variable in new box, bigger box that contains three smaller

box, smaller boxes as part of a date, day, month and year.

So we have these inner boxes that we said that they are if we talk officially, these are just the fields

of this structure.

So these variables, which are part of the bigger box, can be thought of smaller boxes.

OK, I'm just saying it once again.

Think of this simple analogy and your life will be much easier just in the terms of programming again

and in this course.

But you understand these concept of boxes.

Trust me, guys, I I've taught a lot of students how to code and this analogy really works.

So if you let's go back to our EXIS if you want to access one of these fields, OK, we know that currently

they are not initialized one of these inner boxes.

If you want to access them, then it can be done just by using the dot notation.

So first of all, you specify the variable name.

You know that the variable name is not date, OK, it's not strike date.

Let's just refer it to destruct template.

We know that the variable name in this case is my date one.

So we specify my date.

One thought, OK, you put this point and you specify the field name and you know that by looking if

you're going to look at the structure template, you can see there every time you are going to use my.

You always can see any of the exact fields that a given structure has, so you know that this structure

might each one is of a date structure type and date structure type consists of three fields, day,

month and year.

So we are going to specify this field, whatever we want to access.

For example, if we want to access the day, we can specify it here, the month, the year and so on.

So finally, let's make this example.

So might each one variable name dot de the name of the field equals to ten.

We are basically going to this variable to the field of date and put value of ten inside.

So my date one that month month equals to three.

You're going to do the same.

Might each one dot year you you're going to put here the value of fear.

That's basically how it works, that that's basically how you access any of the fields of a given variable

of some structure template.

And we know that if we can read and access some values, OK, from a given place, we can basically

use also the print command to print the values to the screen.

OK, so for example, if you want to print these values through the screen, you may use like something

like that.

Let's just put it here where it is.

Come here.

OK, so you may go like print F, OK, so print F specify here.

I don't know, percentage D, OK.

And instead of that percentage then you may specify this value.

OK, for example, if you want to print the day.

So you specify my date one dot date here and it will be replaced in with this placeholder of percentage.

So that's how you, how you print the value since you know how to access it.

And also since you know how to access a given, let's say, sale inside of this in a given field inside

of this variable, you can also use a scanner function to read values from the user.

And what you are going simply to do if you want to like to read the given a value from the user and

to place it inside of this field of the day field.

So you specify second half percentage there and just use an ampersand here before the value you want

to access to to feel it.

So my suggestion to you guys is make sure that you understand everything that we spoke about in this

video and also make sure you open up your I.D. and give it a little bit of practice and run a couple

of commands and make sure that you can see everything is it should be so until next time.

Keep on practicing.

Keep on moving forward.

And guys, you are bound to succeed him and wish you a good day.