README.txt
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- Each of the subdirectories in this directory contains files
- corresponding to the complete programs and many of the program
- fragments shown in the related chapter.
- BUILDING EXECUTABLES
- --------------------
- We provide two different source code distributions: One that
- works with Microsoft Visual Studio .Net compiler and the other
- that works with the GNU compiler. The source code in these
- two versions are largely the same, although there are some
- programs in later chapters that had to be changed to accommodate
- limitations in MS handling of nested templates.
- Each version of the source code contains a general makefile_template
- in the top-level directory and directory-specific makefiles
- in each chapter subdirectory. The makefiles are fairly simple
- and we have provided comments in the hope that even those who
- are not familiar with makefiles can understand how to compile
- these programs by hand if so desired.
- In the top level directory there is a makefile that will make
- the entire source tree -- it does a cd, in turn, to each subdirectory
- and makes the executables in that directory. The top level
- makefile also has targets "clean" and "clobber" to remove the
- object files or object and executable file respectively.
- To use make on a Windows operating system you invoke the command
- name "nmake":
- ## Windows machines
- > nmake # compiles all the programs
- > nmake clean # removes all the object files and stackdumps
- > nmake clobber # removes executable, object and stackdump files
- INPUT and OUTPUT
- ----------------
- Because not all of the programs are complete, many of them
- do not generate "sensible" output, but instead often print
- some detail about the internal state of the program. To
- understand the output, you will have to understand the program.
- This is intentional.
- The input, if any, to these programs varies:
- Some programs print a prompt and wait for input on the standard input
- Other programs read the standard input but do not print a prompt
- Others take one or more arguments specifying a file name to read
- Yet others take a file name argument and read the standard input
- Each chapter subdirectory contains a README that explains the
- input, if any, expected by each executable file.
- RUNNING THE PROGRAMS
- --------------------
- Each directory contains a simple batch file named "runpgms.bat" that
- runs the executables made in that directory.
- Note that on some systems, the default setting for
- the PATH variable does not include the current directory.
- So, for example, if you try to execute
- add_item <dataadd_item
- the "add_item" program will not be found. Instead, you must write
- .add_item <dataadd_item
- SAMPLE DATA FILES
- -----------------
- For many of the programs that expect input, we have provided
- small, sample input files. Input files are always found in a
- subdirectory named "data". For example, the program 'add_item'
- in directory 1 reads Sales_item transactions from the
- standard input but does *not* prompt for input.
- If the program is invoked:
- add_item
- it will wait for input, which must be in the format of a Sales_item
- transaction.
- Alternatively, the file dataadd_item can be used to provide
- input to this program by using the operating system's support
- for file redirection. Assuming the following is executed in
- the directory named '1' writing
- add_item < dataadd_item
- will bind the standard input to the file 'dataadd_item' and will
- execute the program 'add_item' on the data in that file.
- Programs that take an argument to main will fail if they are
- invoked with no argument. In general, we provide a file to use
- in each case, although in some cases any file could be used
- as input. For example, in the directory for chapter 10, there
- is a program named word_count that can read any file and prints
- the count of how often each word in that file occurs. Another
- program in that directory, the word_transform program, requires
- two input files. You might invoke these programs as follows:
- # the program will use the README file as its input
- word_count README
- # word_transform takes two files, samples are in the data directory
- # this execution uses the file datatrans-map to transform the
- # text in datatrans-text
- word_transform datatrans-map datatrans-text