HP C/iX Library Reference Manual (30026-90004)

376 Chapter5

HP C/iX Library Function Descriptions

twalk

a node before any of its children, after its left child and before its right, and after both its

children. The alternate nomenclature uses preorder, inorder, and postorder to refer to the

same visits, which results in some confusion over the meaning of postorder.

The third argument is the level of the node in the tree, with the root being level zero.

NOTE

The twalk function and the header ﬁle <search.h> are not part of ANSI C.

Using them makes your program less portable.

Examples

Refer to the example located in the tsearch() function description.