Demonstrate how to declare variables and constants in Kotlin, highlighting their differences and use cases.

In Kotlin, variables and constants are declared using the `val` and `var` keywords, respectively. Both variables and constants allow you to store and manipulate data, but they have some key differences in terms of mutability and assignment. 1. Declaring Variables: * Mutable Variables (`var`): When you declare a variable using the `var` keyword, it means that the variable is mutable, i.e., its value can be changed after it is assigned. You can reassign a new value to a mutable variable multiple times throughout the code. ``` kotlin`var age: Int = 25 age = 26 // Valid: Changing the value of a mutable variable` ``` * Immutable Constants (`val`): Constants, declared using the `val` keyword, are immutable, meaning their value cannot be changed once assigned. Once you assign a value to a constant, it remains constant throughout the code. ``` kotlin`val name: String = "John" // name = "Mike" // Error: Cannot reassign a value t....