Vector2D.h 
Vector2D.cc           :  a 2D vector with sum and multiplication by a number
                         plus a transformation with 2 different factors
Vector3D03.h
Vector3D03.cc         :  C++03 : a 3D vector as a 2D vector plus a z coordinate
                         plus a transformation with 3 different factors
Vector3D11.h
Vector3D11.cc         :  C++11 : a 3D vector as a 2D vector plus a z coordinate
                         plus a transformation with 3 different factors,
                         2-D transformation recovered
testVector3D03.cc     :  create, transform and print a 3D vector
testVector3D11.cc     :  C++11 : create, transform and print a 3D vector

to compile:
c++ -Wall -std=c++03 -o testVector3D03 testVector3D03.cc \
                Vector2D.cc Vector3D03.cc
c++ -Wall -std=c++11 -o testVector3D11 testVector3D11.cc \
                Vector2D.cc Vector3D11.cc
