PreOrderTraverse(T,Visit());
InOrderTraverse(T,Visit());
PostOrderTraverse(T,Visit());
示例源程序
#include <alloc.h>#define ERROR 0;#define OK 1;typedef int ElemType;typedef struct BinaryTree{ ElemType data; struct BinaryTree *l; struct BinaryTree *r;}*BiTree,BiNode;BiNode * new(){ return( (BiNode *)malloc(sizeof(BiNode)) );}CreateSubTree(BiTree *T,ElemType *all,int i){ if ((all[i]==0)||i>16) { *T=NULL; return OK; } *T=new(); if(*T==NULL) return ERROR; (*T)->data=all[i]; CreateSubTree(&((*T)->l),all,2*i); CreateSubTree(&((*T)->r),all,2*i+1);}CreateBiTree(BiTree *T){ ElemType all[16]={0,1,2,3,0,0,4,5,0,0,0,0,6,0,0,0,}; CreateSubTree(T,all,1);}printelem(ElemType d){ printf("%d/n",d);}PreOrderTraverse(BiTree T,int (*Visit)(ElemType d)){ if(T){ if(Visit(T->data)) if(PreOrderTraverse(T->l,Visit)) if(PreOrderTraverse(T->r,Visit)) return OK; return ERROR; } else return OK;}main(){ BiTree root; CreateBiTree(&root); PreOrderTraverse(root,printelem);}