A variable is a name to represent any value. In a computer, it is a name for a slot in the RAM (Random Access Memory).
Variables
Variables in Kotlin
Syntax
var [name] : [type] = [value]
val [name] : [type] = [value]
The keywords "var" and "val" are used at the beginning of the declaration of the variable to let the computer know that it is indeed a variable.
The differences between "var" and "val" is that "var," means the value can be changed. "val," means that the value is FINAL and cannot be changed once it is set.
Examples
var str: String = "My First String!"
Since it is a "var," we can change its value.
str = "Changed Value"
We can ignore the type if we declare and initialize the variable in the same line (inferred).
var str = "My First String!"
Data Types
Here are some primitive types available
String: Text
int: Whole numbers
float: Decimal numbers
double: Large decimal numbers
boolean: true or false
char: Single letter
