where to find example code of c++
#include <world> void main(void) { World world; world.run(); for (;;) ; }
Was there some more specific information you wanted to know? Note that the world object can be rather big so it may be needed to keep it as a global object.
See \Keil\arm\examples\c++ (only 2 examples - but usually enough to start). (uVision 4.6 - from 4.53-4.54 the path might have changed a bit).