Other C interpreter threads here[1,2] refer to a number of historical implementations (which you can often find on abandonware sites if that’s your thing), but

Other C interpreter threads here[1,2] refer to a number of historical implementations (which you can often find on abandonware sites if that’s your thing), but this particular one from 10th Edition Unix seems to mostly go unmentioned on the ’net (this roff source for the paper and a spartan man page[3] are all I could find). [1] https://news.ycombinator.com/item?id=11748147 https://news.ycombinator.com/item?id=11748147 [2] https://news.ycombinator.com/item?id=20950865 https://news.ycombinator.com/item?id=20950865 [3] https://man.cat-v.org/unix_10th/1/cin https://man.cat-v.org/unix_10th/1/cin