declare a float number in Ruby

  number = 1.0

This code line declares a float number in Ruby. In Ruby, numbers are objects and can be declared without any type identifier. The code assigns a float number with a value of 1.0 (a real or “floating point” number, meaning it includes a decimal point) to the variable “number”. Variables are used to store information which can be accessed or changed by other parts of the program. In this example, the float number 1.0 is assigned to the variable named “number” and stored in the computer’s memory. This number can then be used elsewhere in the program as needed.