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Notice look at Donati operator if you recall we touched upon it well into using operators at the very

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beginning of the chapter so does an operator.

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But we are discussing it as part of control flow statements as it can be used as an alternative.

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If a statement we honor already seen that in certain scenarios.

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A switch statement can be used as an alternative to an IF statement.

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Similarly when it comes to Dunalley operator it can be used as an alternate to an IF statement in only

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one scenario.

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It let the operator can be used as a shorthand for if else statements that include only single statements

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that is both f block and as block cannot how more than one statement each hit is the syntax of an assignment

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statement that involves a Donati operation on the left side of the assignment.

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We have a variable on the right.

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We have an expression involuntarily operator that then any operator in good two symbols a question mark

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and a call in as I mentioned at the beginning of the chapter A eternity operator as the name suggests

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in most three options the three options are the boolean expression true expression and false expression

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if boolean expression evaluates to true then true expression is evaluated.

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Otherwise the false expression is evaluated the final expression that gets evaluated right into value

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and that value is assigned to the variable on the left side.

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Not that I that boolean expression is optional and can be used for readability.

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Unhorse are the same Donati operation can be represented using an if else statement.

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So if the boolean expression is true then the statement results equal to true expression gets executer

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otherwise the statement result equal to false expression gets executed.

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Here is a simple Donati example for computing a minimum of two numbers x and y.

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If x is less then right then the variable man gets assigned the value of X otherwise it gets this and

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the value of y so the next question is then do you study the operation in preference to an IF statement

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.

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Just like in the case of switched it meant you can use Donati if you think it improves readability.

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One example will be when we need to construct smart strings.

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For example let's say we have a program that sends out emails and the e-mail message must start with

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a customized greeting based on user's gender.

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So the gender is men then the greeting would be the text Hello followed by salutation Mr. which is then

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followed by the user's name.

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Similarly if the gender is female then the salutation has to be missed.

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So the salutation changes depending on the user's gender and for that we can make use of binary operator

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as we can see here.

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So if the metal is merely returns true then the Donati operation would read under text Mr.

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Otherwise the next Miss would be written plus operators are used to concatenate the strings the final

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string is assigned to the variable current grouping.

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Know here is the same representation using an if else statement.

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So initially the variable grading is initialized to hello and depending on the outcome of the if condition

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appropriate salutation will be appended.

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Finally name is up and that with a variable grading as you can see the Donelly version is much more

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elegant with only a single line of code.

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Similarly and they're good for using Donati is unlock statements statements print important messages

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during program exudation and they can be very useful for fixing bugs.

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Although here we are using a print aland statement in professional projects you would be using some

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kind of cataloging framework it here is an important thing to note.

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If you recall when learning about statements we mentioned about three types of statements and one of

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them was expression statements an expression statement is simply an expression appearing as a statement

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that is the expression followed by a semicolon.

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Know even a dirty operation is an expression.

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However it cannot be expressed as an expression statement that is only certain kinds of experience can

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be expressed as expression statements and not all of them.

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For example at post-road a pre-increment or a post predicament operation which is also an expression

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can be an expression statement.

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Similarly any method in Kishan can be an expression statement so basically you cannot do this and you'll

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get a compiler error if you do this.

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It needs to be part of an assignment statement or it can also be part of other kind of statements like

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metheglin location statements or even a method to that statement.

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Let's act will it be a short term goal of using it as a written statement.

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OK let's just go ahead and write a simple method call men which returns minimal off to numbers and it

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will make use of the or the operator.

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First let's define a variable called Min.

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We are in the basic democracy and it simply invokes the method meant.

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And let's just pass two parameters say nine and three.

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And let's just print this value let's call it min k now let's just go ahead and define the method also

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.

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So it's going to be a static method and men that say and X pain why so let's just define what it is

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that and it's have there been any operation

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less then by then you are done X otherwise and Y and are done it is at so let's just compile and run

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this

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as you can see to spending three.

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So we were passing nine and three and spending the the minimum value with just three.

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Now just remember that you cannot do this.

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That is eternity.

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Expression cannot be used as an expression statement.

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So let's just try to compile this.

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See it says error.

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Not a statement.

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OK so you cannot do that.

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Let's put the written statement directly because we said that it can be used as a written statement

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as part of a written statement.

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So I may just compile and run this once again.

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A search still returns three.

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So that's the only operator.

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So you can mainly use it if you think it will improve readability.

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So in that case just go ahead and use it.

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OK.

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So just go ahead and you can practice on audio operator.

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So just play around with it and that's about it.

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Thank you.

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And happy coding.