我一直試圖在過去教自己Ruby，而我一直試圖得到類似下面的東西，但我得到以下錯誤......

file.rb:44:infunc': undefined local variable or method number' # (NameError)

The code that's giving me this error is...

 class A
     def func
          file = File.new("file", "r") 
      file.each_line {|line| @numbers << line.chomp.to_i}
          @number = @array[0]
     end
 end

 class B < A
     def func
       super number
       puts number
     end
 end

Could someone please tell me what I'm doing wrong?

edit// Just a clarification that I want number in class B to inherit the value of @number in class A.