I have never made these kind of mistakes. I have done the things in section 2 and section 19, but I did it on purpose and expected the result, it was not a mist

I have never made these kind of mistakes. I have done the things in section 2 and section 19, but I did it on purpose and expected the result, it was not a mistake. I use Enhanced CWEB for C programming. Many of these things will be caught because you can see in the printout of the book, that there are mistakes. (For example, it typesets octal numbers in italic)