Welcome to Kotlin!
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Data Types
Var
Operators
Comments
Input
If
While Loops
Var

Variables are used to store data.

Each variable has a type that defines the type of the data that it holds.

Variables are declared using the var keyword:

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var num: Int = 42 

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We have declared a variable called num of type Int, and assigned the value 42 to it.

Now we can use num in our code, for example output its value using println():

println(num)

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You can also declare variables using the val keyword:

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The difference with var is that variables declared using val cannot be changed.

© Rostik_Halk,
книга «Kotlin».
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