How to distinguish a variable declared with var from val and const val in Kotlin?

In Kotlin, the differences between var, val, and const val are as follows:

• var — a mutable variable. Its value can be changed after initialization.

  var count = 5
  count = 10 // allowed
  

• val — an immutable variable (a runtime constant). Its value can be assigned only once, but it can be computed at runtime.

  val name = "Alice"
  // name = "Bob" // compile error
  

• const val — a compile-time constant, whose value is known at compile time. Used only for primitive types and strings, declared at the object or file level.

  const val MAX_COUNT = 100
  

Summary:

• var — mutable variable.
• val — immutable variable, its value is set once during execution.
• const val — immutable constant, its value is known at compile time.