This code reads three integers, calculates their sum and product, and prints them. However, there are two mistakes that prevent it from working correctly. - The `scanf` function requires addresses of variables, not the variables themselves. You passed `a`, `b`, `c` but should pass `&a`, `&b`, `&c`. - The `printf` format string has `&d` instead of `%d` for the first value. The `&` is not a valid format specifier.