Rubyにおける数値型と定数の例

123 # Fixnum decimal
1_234 # Fixnum decimal with underscore
-500 # Negative Fixnum
0377 # Octal
0xff # Hexadecimal
0b1011 # Binary
"a".ord # Character encoding for "a"
? \n # Encoding for line break (0x0a)
12345678901234567890 # Bignum
# Integer Integer The following are some integer literals 
# Literal: values that can be seen in the code, numeric values, bool values, strings, etc. are called literals 
# such as the following 0,1_000_000,0xa, etc. 
a1=0 

# integer with thousandths character 
a2=1_000_000 

#Other binary representations 
a3=0xa 
puts a1,a2 
puts a3 
#puts print is to print characters to the console, where puts brings back carriage returns 


=begin 


This is the comment, called: embedded document comment 


Similar to /**/ in C# 


=end 

123.4 # Floating point value
1.0e6 # Scientific notation
4E20 # Not required
4e+20 # Sign before the exponent

#floating-point type 
f1=0.0 
f2=2.1 
f3=1000000.1 
puts f3 

#Exponential arithmetic 
puts 2**(1/4)#1 quotient of 4 is 0, then 0th power of 2 is 1 
puts 16**(1/4.0)#1 quotient of 4.0 is 0.25 (one quarter), then root of four

#! /usr/bin/ruby
# -*- coding: UTF-8 -*-

class Example
  VAR1 = 100
  VAR2 = 200
  def show
    puts "The value of the first constant is #{VAR1}"
    puts "The value of the second constant is #{VAR2}"
  end
end

# Create an object
object=Example.new()
object.show

The first constant has a value of 100
The value of the second constant is 200