check idempotence of openings for a particular case




File list:
exercise_05b_idempotence
.......................\.settings
.......................\.........\org.eclipse.cdt.managedbuilder.core.prefs
.......................\Debug
.......................\.....\exercise_05b_idempotence.exe
.......................\.....\exercise_05b_idempotence.o
.......................\.....\immed_gray_inv.pgm
.......................\.....\immed_gray_inv_20051123_clo1.pgm
.......................\.....\immed_gray_inv_20051123_clo2.pgm
.......................\.....\immed_gray_inv_20051123_ope1.pgm
.......................\.....\immed_gray_inv_20051123_ope2.pgm
.......................\.cproject
.......................\.project
.......................\exercise_05b_idempotence.cpp