I put my cheddar in my kitchen cabinet
Some cheeses can be left out without any real problems, there are some aged cheeses that I buy regularly that can sit on the counter for two weeks.. I believe that cheese was created to help preserve other foods that would go bad if left out. 

I think it depends on how well the cheese was sealed. I typically seal with plastic wrap, I will cover the entire block of cheese with the wrap and ensure that it is air tight. I don't know how well your cheese was sealed but I don't know that a tupperware container is the proper way to store cheese.

I would probably still eat the cheese though, I love cheddar.