In a traversal of a binary tree, each element of the binary tree is visited exactly once.
During the visit of an element, all action (make a clone, display, evaluate the operator, etc.) with respect to this element is taken.
Something about coffee……
我不在家裡,就在咖啡館。
不在咖啡館,
就在去咖啡館的路上。
一個人、一杯咖啡、一個生活形態。
www.csie.isu.edu.tw
* Classes classes and objects
from object-oriented programming point of view
class declaration
class class_name{
data members …
methods (member functions) …
}