On page 399 of the book, a few errors appear in the comments of the Sample routine that starts the Capture and Apply programs; however the code in the sample is correct. The latter part of the sample pertains to the Apply parameters, despite the fact that the comments indicate that it pertains to the Capture parameters.
You can get samples of the Apply and Capture API, and their respective makefiles, in the following directories:
For NT - sqllib\samples\repl For UNIX - sqllib/samples/repl