Discussion on question by Сергей: В цикле while не работает функция getchar()

Imported from a comment discussion on https://ru.stackoverflow.com/questions/1604436/%d0%92-%d1%86%d0%b8%d0%ba%d0%bb%d0%b5-while-%d0%bd%d0%b5-%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0%d0%b5%d1%82-%d1%84%d1%83%d0%bd%d0%ba%d1%86%d0%b8%d1%8f-getchar