Had to verify. And yes. Kernighan and Ritchie really did this. TIL :)
And no, Stroustroup did NOT do this in the C++ book and also no, Knuth didn’t do this in AOCP :)
@jwildeboer Okay, technically I agree. Knuth didn't do recursion, he had a circular reference in the index. And ten years before the first edition of K&R C.