Global variable exist throughout the life of the program · known to all progran AVOID GLOBAL VARIABLES WHENEVER POSSIBLE (for information hidden) PROGRAMMINGMETHDOLODGY AND SOFTWAREENGINEERING 港城市大 Copyrighto1998 Angus WuPROGRAMMING METHDOLODGY AND SOFTWARE ENGINEERING Copyright©1998 Angus Wu Global Variable • exist throughout the life of the program • known to all program • AVOID GLOBAL VARIABLES WHENEVER POSSIBLE (for information hidden)