I'm doing the If, Else, and Elsif exercise and wanted to make it so that the code wouldn't progress to evaluating a and b unless a and b are definitely numbers. So I'm trying to use the until loops to check that a and b are numbers, but I'm not sure I'm using is_a? correctly. I want the loop to assess whether or not the variables belong to the Numeric class, but even when a number is entered, the condition won't evaulate to true, so the code just gets stuck in the until loop. How can I get the loop to break when a number is entered? Thanks.
print 'Enter number a:' a = gets.chomp until a.is_a?(Numeric) == true print "That's not a number, enter number a:" a = gets.chomp end print 'Enter number b:' b = gets.chomp until b.is_a?(Numeric) == true print "That's not a number, enter number b:" b = gets.chomp end if a == b print 'a equals b.' elsif a < b print 'a is less than b.' else print 'a is more than b.' end