#To run the program kindly type the command go run main.go from the root directory of the project and you will be prompted to enter a command.
The commands are - "CIT" - to create item "AINV" - to add an item into inventory "AUS" - to add user in the system "ATC" - add to cart "UC" - update cart "RE" - remove cart "GC" - get cart "CO" - to checkout
after the commands, provide input as given in the description of task