Terminal not executing Ruby files

Question

I\'m pretty much entirely new to programming, so bear with me. I am on a Macbook Pro running 10.6.6.

At the beginning of the \"Learn to Program\" tutorial are these dir

Answer 1

ruby 1.9.3p0 (2011-10-30) [i386-mingw32]

C:\Ruby Programs>ruby calc.rb

ruby: No such file or directory -- calc.rb (LoadError)

C:\Ruby Programs>ruby calc.rb.txt

3

One should not have to add the .txt extension while attempting to run the program from whithin the program's home folder. I have to though.