Notes

/*
Variables = a little bucket where we can put information
Types: String, Int, Double, Boolean, Float, Char
String;
Int = number
Double type 23.00, 21.89
Boolean = True, or False
Float = fraction 0.6, 2.5, 1.4 etc
*/

fun main(args: Array<String>) {
println("##### Kotlin Variables #####")
// valVar()
// boolean()
// char()
double()
// float()
// int()

}

fun valVar(){
/*
Difference between var and val
var = meant to be reassigned
val = static - not meant to change, or be reassigned
*/
val pi = 3.14
val url = "www.google.com"
var name = ""
name = "salman"
println("##### val and var #####")
println("pi: $pi and url: $url and name: $name")
println("")
}

fun boolean(){
var myBool = true
var newBool: Boolean? = null
newBool = false
println("##### Boolean #####")
println(newBool)
println("")
}

fun char(){
var myChar = 'M'
var newChar: Char? = null
newChar = 'B'

println("##### Char #####")
println("$newChar $myChar")
println("")
}

fun double(){
var myDouble = 23.01
var newDouble: Double? = null
newDouble = 23.0

println("##### Char #####")
println("Here's my number $newDouble")
println("")
}

fun float(){
var myFloat = 0.5
var newFloat: Float? = null
newFloat = 0.6f

println("##### Float #####")
println(newFloat)
println("")
}

fun int(){
val age = 31 // we are implicitly defining age to be an Integer Type
var myAge:Int = 32

println("##### Int #####")
println("age: $age" )
println("")
}