[루비] 루비 숫자 다루고 변환 메서드

puts "Simple calculator"

25.times {print "-"}

puts "Enter the first Number"

num_1=gets.chomp

puts "Enter the second Number"

#gets.chomp는 String으로 받아온다.

num_2=gets.chomp

puts "The first number multipled by the second number is #{num_1.to_i * num_2.to_i}"

puts "나누기 : The first number division by the second number is #{num_1.to_i / num_2.to_i}"

puts "더하기 : The first number plus by the second number is #{num_1.to_i + num_2.to_i}"

puts "빼기 : The first number minus by the second number is #{num_1.to_i - num_2.to_i}"

num_3=10

puts "#{num_3.to_f}"

puts "#{num_3.odd?}"

puts "#{num_3.even?}"