Marc Gregoire is a Microsoft Visual C++ MVP, software architect and developer, and the founder of the Belgian C++ user group. Having previously completed critical 2G and 3G telecom software for Siemens and Nokia Siemens Networks, he currently works on X-ray, CT, and 3D geometric inspection software for Nikon Metrology. Marc is the author of Professional C++ 2nd, 3rd, and 4th editions, co-author of C++17 Standard Library Quick Reference, and technical editor for numerous published works.