ArcGIS Engine Developer Guide

BUILDING A COMMAND-LINE C++ APPLICATION
This will have the same effect as typing “RasterSlope.exe
C:\MyComputer\Rasters\RasterDataset tempslope” with command-line arguments
at the command line.
Processing the arguments
The user provides the input and output file information for this application at
runtime (either through the makefile or at the command line). To get the specifics
of that information to use it in the program, some argument processing must be
done.
1. Create a new file, RasterSlope.h, in your text editor. Place the contents of the
file in a #ifndef and #define section. Include a standard C++ header file so
that information, such as a usage message, can be displayed to the user.
#ifndef __RASTERSLOPE_ESRISCENARIO_h__
#define __RASTERSLOPE_ESRISCENARIO_h__
#include
#endif // __RASTERSLOPE_ESRISCENARIO_h__
2. In another new file, RasterSlope.cpp, begin implementing your slope application.
First include the header file you created in the last step. Then start writing
the main function. For now, just process the arguments in it. Make sure the
correct number of arguments was entered, else print out a usage message and
exit. Since the first argument will be the program name, it can be ignored. The
second argument is the input data, and the third is the resulting slope file. You
will check if the arguments passed are valid later in the program’s execution.
#include "RasterSlope.h"
There are three ways to scope members in a
namespace. The following are examples of each
using cerr, a member of namespace std:
1. using namespace std;
2. using std::cerr;
3. std::cerr