chap20
......\teapots
......\.......\main.cpp
......\.......\teapots.cpp
......\.......\teapots.h
......\.......\teapots.pro
......\tetrahedron
......\...........\main.cpp
......\...........\tetrahedron.cpp
......\...........\tetrahedron.h
......\...........\tetrahedron.pro
......\vowelcube
......\.........\main.cpp
......\.........\vowelcube.cpp
......\.........\vowelcube.h
......\.........\vowelcube.pro