Abhijit Khanna

	def celsius_to_fahrenheit(celsius)
	  return celsius * 9 / 5 + 32
	end

	puts "Please enter degrees in Celcius: "
	celsius = gets.chomp.to_f

	puts "You entered #{celsius} degrees Celsius"
	puts "The temperature is #{celsius_to_fahrenheit(celsius)} degress Fahrenheit."
	

	def ordinal_it(input, ones_digit)

	  if input >= 11 && input <= 13
	          puts "That's the #{input}th item!"
	  elsif ones_digit == 1
	          puts "That's the #{input}st item!"
	  elsif ones_digit == 2
	          puts "That's the #{input}nd item!"
	  elsif ones_digit == 3
	          puts "That's the #{input}rd item!"
	  else
	          puts "That's the #{input}th item!"
	  end
	  
	end

	puts "Please enter a number"

	user_input = (gets.chomp).to_i

	right_most = user_input % 10

	ordinal_it(user_input, right_most)
	

	def div_by_3(num)
	  
	  if (num % 3) == 0
	    return true
	  else
	    return false
	  end
	  
	end

	def div_by_5(num)

	  if (num % 5) == 0
	    return true
	  else
	    return false
	  end  
	  
	end

	def foobar_main(num_elements)
	  
	  i = 1
	  
	  num_elements.times do
	    
	    if (div_by_3(i)) && (div_by_5(i))
	      puts "Foobar"
	    elsif (div_by_3(i))
	      puts "Foo"
	    elsif (div_by_5(i))
	      puts "Bar"
	    else
	      puts i
	    end
	  
	     i = i + 1
	  end
	  
	end


	puts "How many elements do you want to see the foobar pattern for? (please enter an integer number)"
	elements = (gets.chomp).to_i

	foobar_main(elements)