using Printf

function variable_examples()

println("--------------------------------------")

println("variable_examples")

println("Variables types can be dynamically assigned")

s = 0

println(s)

s = true

println(s)

s = "Dog"

println(s)

println("We can also specify variable types")

x::Int8 = 10

println(x)

y::Int16 = -10

println(y)

# If we try to assign a different type to a typed variable, we get an exception

#y = 3.14

#println(y)

# Int8 : -128 - 127

# Int16 : −32,768 - 32,767

# Int32 : −2,147,483,648 - 2,147,483,647

# Int64 : −2^63 - 2^63 - 1

# Float32, Float64, UInt8, UInt16, etc.

# UInt8, UInt16, etc.

println("We can also use booleans")

somebool = true

println(somebool)

println("Chars have to be surrounded by single quotes")

c = 'c'

println(c)

println("Cast from Int to Char")

c2 = Char(120)

println(c2)

println("Cast from Float to Int")

i1 = UInt8(trunc(3.14))

println(i1)

println("Cast string to Float")

f1 = parse(Float64,"1")

println(f1)

println("Cast string to Int")

i2 = parse(Int8,"1")

println(i2)

println("We can also create BigInts")

someBigInt::BigInt = 1234 * 1234 * 1234 * 1234

println(someBigInt)

println("And we can create BigFloats")

someBigFloat::BigFloat = 1234 / 1234 / 1234 / 1234

println(someBigFloat)

end