User blog comment:WaxPlanck/New Ackermann Function/@comment-162.238.217.96-20180720171235/@comment-31966679-20180725144658

Install the bc compiler/interpreter (I have no idea whether it is an interpreter or a compiler), make a bc file (with whatever file extension bc has at the end of the file name), copy-paste the code into whatever text editor you have, then run bc from the Command Prompt, and if it’s an interpreter, it will run automatically. If it is a compiler, then run the .exe file produced.