scala-programming-constructs.scala

//Expression
println("********")
println("Expression")
val c = {
  val i = (math.random * 100).toInt
  val j = (math.random * 100).toInt
  i - j
}
println(c)

//Nested block
val a = {
  val x = 0
  val y = 1
  val b = {
    val y = 2
    println("value of x inside nested block is " + x)
    println("value of y inside nested block is " + y)
  }
  println("value of x inside main block is " + x)
  println("value of y inside main block is " + y)
}


println("********")
println("Another Expression")
val sqr = {
  val a = 1
  val b:Long = 23L
  val hi = "hi"
  true
}
println(sqr)

// Start writing your ScalaFiddle code here
//if-else-if-else
val i = 10
val j = 20
println("********")
println("if else")
if(i > j) {
  println(i)
} else if(i == j) {
  println("Equal")
} else {
  println(j)
}


//ternary operator, it uses if else
println("********")
println("Ternary")
if(i > j) println(i) else println(j)

//while loop
println("********")
println("While loop")
var ctr = 0
while(ctr <= i) {
  println(ctr)
  ctr += 1
}

//for loop
ctr = 5
println("********")
println("For loop")
for(a <- ctr to j) {
  println(a)
}

println("********")
println("For loop increment by constant")
val constant = 2
for(a <- ctr to j by constant) {
  println(a)
}

println("********")
println("For loop decrement by constant")
for(a <- j to ctr by -constant) {
  println(a)
}