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Welcome back, guys.

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Welcome to another lecture here, are we going to continue working with operators, but is it going

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to be something very interesting?

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Now we're going to talk about Operator Precedent's and I'm going to create Muifa.

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It's going to go see Dense.

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Not just now.

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I'm going to put a link in the description actually for you guys so you can go there and get the resource

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that I'm going to show to you.

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But before that, let's right.

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Let's create another file called Proceedings.

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And yeah, let's create another HTML file.

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So I'm going to copy this from Control C, Control V, and I'm going to call Pressie.

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That's very good.

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So the HTML is not going to have all these.

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All right.

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But it's going to have what, Gristedes JSA and it's going to give me double JS now.

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It's all good.

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I'm just going to close this one.

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I need these two only.

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So and here I'm going to see.

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Operators.

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And I'm going to copy this one and I'm going to paste in here.

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Very good.

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Now, in order for this to work, slash precedent's.

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That HDMI, right?

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So here it is.

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Now, this is the table that I'm talking about, but we're going to just go back here first.

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What I want to do in the proceedings and I'm just going to see the wire, I'm going to create a variable

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called current is very good in that current year will be 20-20 for me, for you can be different here

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now

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for date of birth for Rick is going to be nineteen eighty seven right here.

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I want to check if is were in here.

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We want to check if it's teenager.

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So teenager.

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Like Spirit, 16 years and a teenager, I think is between 13 and 19 years, right.

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So we're going to we want to check if it's a teenager, if some boys, for example, me, is a teenager.

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Now, I know that's a little bit confusing, but what we're going to do, we've got to create oi check.

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Status or age?

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And we're going to see Carinthia.

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Minus date of birth of Rick, and I want to check if this is greater or equal to full age to each teenager.

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Now, what will do this?

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I'm just going to look at it and I will say check the status.

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Now, when we talk about operators proceedings, we just want to see which of these operators consider

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this as operator, these as separate operator and even people signees.

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Operator, know what you think will be this one.

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So it's true.

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It returns.

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True.

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OK, so why is that?

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So basically what we want to do here is logically we want this year, the current year 2020 and to be

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minus this year, that the year that I'm born and after that to check if this is greater than a teenager

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to return me a result.

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So as you saw, it's going to return.

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True.

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Why this is happening is because 2020.

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So they have but it's 1987 and here is greater than 16.

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Right.

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And that is why 2020 minus this one will give you 33, which is so these two will give you 33, which

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is greater than teenager.

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That's why it is going to give you that result.

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So this is the age maybe is not a good example, but I want you to show you that there is an operator

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precedent.

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So first, this one is not executed first.

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These two are executed.

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Then this is compared to this one.

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So I'm saying this.

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If you go back to this table, so here is a Poseidon's in the following table is order from the highest.

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I mean, this has the highest precedence and these are individual operators.

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So if you put them in the brackets, for example, if you want this to go first, you're going to put

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them in brackets and that's how it's going to work.

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But now that's what we have here, is we have it's greater or equal to in minus.

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Let's check where the minus is.

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You need to go like this.

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So we're going to here it is unary negation, that's how they call it.

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And it's 17.

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And where is a greater or equal to here?

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It is greater than or equal.

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So it's on 12.

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So 17 is higher than 12.

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That's why we did.

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Yep.

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Here it is.

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So these all these all have a precedence or 17.

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Don't be confused.

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So that's why minus unary negation is more powerful than this.

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Greater than or less than.

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Right.

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So even if we use less than the first will go for the minus.

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That is why you need to check this table.

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And now the last part is this equation.

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I mean, assignment.

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So that's why you check status.

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It's giving us true or false because we are checking the status and we're checking the status.

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And actually that is getting the value what is being calculated here.

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So I hope I am.

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You understand what I'm trying to say now.

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Be careful, because if you do some operation, mathematical operation, wherever it is, make sure

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that you are choosing things wisely because this is stronger than this.

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And it will this part will be executed before this part.

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Right.

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So maybe some of you think, OK, this part will go first and after that it will compare it to the current

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year.

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It will be.

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Yeah, it will be go minus with the company.

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But that's not the case.

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OK, that was a crazy example.

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Now I'm just going to comment this one.

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We're going to do another example.

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For example, I'm going to say more first.

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No second number

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if I can type of.

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Right.

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Third number.

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And that's it.

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And yes, this is not correct.

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Now I'm going to initialize all the clear values for them here.

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First number, let's say, OK, I'm going to give it the 15 second number.

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And it's good to have the space.

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It's more it's not going to change anything, but it's good to have space.

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Second number and third number.

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Now, here, I will say five in here I will see twenty five.

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Right.

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Maybe I should go with 20 because I have five, five, five everywhere.

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Now I have three numbers that have initial values inside.

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Now what I want to do is I'm going to show you.

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That.

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We can use this one individual operators like this, so what I'm what I can do is I can say, OK.

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For let's put a result here, here, I'm going to say a result.

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The result is not actually holding any value, but it will hold in a minute.

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Now, I just want third number to go minus first number.

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And after that, I just want to do the least.

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So third number is 20, minus five minus this.

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The first number is going to give us a five year after that.

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I want to delete by this second number.

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Now, what do you think the result will be?

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So let's alert and check the result.

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So I'm just going to alert this result instead of a log.

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But if you want, you can do calls a lot.

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And it is why why it's won what you think is one.

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Now, first, everything that is in this bracket, there is a precedence of 21 in here.

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Inside there is a negation, how they call it negation in their negation.

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So this will happen.

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So 20 minus 15 will will be five.

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And after that, these four deletion where it is, I'm just going to need to find out if it is the vision

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is on the number of 15 and before was minus.

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Right.

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And everything is going under a like like that logic from this table, from this president.

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So that is why you should look into that residence and everything will happen first in the brackets,

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regardless of what is here, that will be second.

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So even if we do

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even if we do multiplication because multiplication and division, let's see, um, here it is.

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Multiplication is from left to right.

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Doesn't matter how you multiply in division, they're in the same place.

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So it actually will be the result should be twenty minus 15 will be five times five.

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Should I should get the result of twenty five.

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It is the result is twenty five.

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So I hope you get the logic of Operator Precedent's.

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Let's do one more example where we are going to have a multiple variables and so I'm going to have first,

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second, third, and I'm going to add fourth here and the fourth.

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Will be how much like maybe six doesn't matter, we will see at the end now here I'm just going to common

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these four actually we can common all of these and do it from scratch because I don't want to see any

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alert box from previous.

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Now, I just want it resolved to do something like this.

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I would like to do again in brackets.

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I would want to have a first number plus a third number, and we should have five here because everything

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is like around it with fives.

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So we have first number plus third number.

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And after that we can have multiplication times for number.

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Thumbs for no.

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If we're going to minus again, this second number.

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OK, so I think we use everyone first, second, third and fourth.

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Now, I'm just going to go to alert and let's check out the result.

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And I'm going to pause the video if you want, in order.

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I'm just going to close here, just going to refresh.

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So the number is 170.

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So I'm going to pause the video and actually will leave you guys like five, four or not.

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But we'll give you one minute to think about how I get this number.

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OK, I hope you get this one right.

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So because I've done it in that minute, I've just put it here.

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The steps show these is when you put I didn't put resultantly.

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So 15 is the first number, 20 is the third number times five, that minus five.

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So actually we have second number and thought number to be five doesn't matter.

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So the first step is everything to do in these areas, you know, or grouping operator.

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So that is taking a first presidents and that's why it's coming out the thirty five.

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So the second one is which one is it stronger at multiplication or minus.

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So you see here that if you go down you will see that multiplication will take this one as first.

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Sorry, guys, I just got a little bit confused, so it's not this one that we're just looking, it's

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about the substraction.

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So it's a fraction is a number 14, and that's why the multiplication is on level 15.

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So forget about everything that I've told you about before.

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So you should look, when it's come to mind, is this one substraction?

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Right.

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I just bought my video because I realize how come that I'm looking at this one negation here, you know,

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negation.

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And because I was I was I looked at that one and I was thinking, OK, that that is the minus, but

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that is not the case.

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So 17, it's not for that substraction it's 14.

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Actually, that is why the result will be like this.

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The first this will happen then because the multiplication is stronger than the minus.

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It will happen that one thirty five times five and that is one hundred seventy five.

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And after that we have the third step is this one hundred seventy five.

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So the result, that's why the result that we have in here, we just passing there, it's 175, it goes

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here.

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That is the third and final step and that is why we have one hundred and seventy.

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Now I hope you understand and this is about Operator Precedent's.

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It's sometimes a little bit complicated to explain, but it's not that much.

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Make sure you understand this table and don't just rush like me and think that this is the minus right

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now.

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The the highest, no more stronger precedent's, the lowest number like this one where this assignment

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actually the result that is this part from left, from right to left.

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So we're going to assign it that.

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That's why that assignment happens last, because we are precedent's number three.

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That is pretty much it for this lecture.

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I hope you enjoy it.

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Now, you know how these operate precedent's is working and you just practice it, find some other examples

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here and just compare it divided and stuff like that.

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Thank you very much.

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I hope you enjoyed it.

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And I will see you in the next one.