Data Types
Numbers
Ruby numbers support integer and decimal arithmetic.
Numbers
numbers.rb
radius =
pi = 3.14
diameter = radius * 2
area = (pi * radius * radius).round(2)
puts "diameter=#{diameter}"
puts "area=#{area}"
radius =
pi = 3.14
diameter = radius * 2
area = (pi * radius * radius).round(2)
puts "diameter=#{diameter}"
puts "area=#{area}"
radius =
pi = 3.14
diameter = radius * 2
area = (pi * radius * radius).round(2)
puts "diameter=#{diameter}"
puts "area=#{area}"
numeric expression
Ruby evaluates arithmetic expressions before assigning the result to a variable.