It works but I don't really understand why. If the number isn't zero you call the function again and then output the number, how does this result in the numbers reversed?

How will the program know the number orders if I can't use an array?
I know what a recursive function is; is it really simple and I'm just thinking too hard?

I need to write a recursive function reverseInput that until the user enters zero it keeps on accepting numbers, then when done, outputs them in reverse order. Only thing, i cannot use strings or...

Thanks much for all the help, I figured it out with all the suggestions

I don't understand functions that accept a variable number of arguments. I want to make a program with a max function taking any number of type double and returns the greatest of them