object Test extends App {

  def test1(n: Int) = {
    println(s"""Bob is $n years old""")
    println(f"""Bob is $n%2d years old""")
    println(s"""Bob will be ${n+1} years old""")
    println(f"""Bob will be ${n+1}%2d years old""")
    println(s"""$n+1 = ${n+1}""")
    println(f"""$n%d+1 = ${n+1}%d""")
  }

  def test2(f: Float) = {
    println(s"""Best price: $f""")
    println(f"""Best price: $f%.2f""")
    println(s"""$f% discount included""")
    println(f"""$f%3.2f%% discount included""")
  }

  test1(1)
  test1(12)
  test1(123)

  test2(10.0f)
  test2(13.345f)

}
