There is a bug in this example:

    char ch;
    while ((ch = fgetc(in)) != EOF) {
        fputc(ch, out);
    }

https://little-book-of.github.io/c/books/en-US/book.html#exa...

The return type of fgetc() is `int` and not `char`. This example will not differentiate between end-of-file in input versus reading 0xff. 82.7 appears to be the only example with this issue, all other places with fgetc correctly uses `int`.

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I found another section with lots of syntax errors, for example:

    int x = 10;
    int *p = &x;
    int pp = &p;   // Should be int **pp

https://little-book-of.github.io/c/books/en-US/book.html#add...

Most likely because the two asterisks needed for pointer-to-pointer isn't rendering properly.