例: 以孩子-兄弟鏈作為儲存結構，求樹的高度

源程式：【說明——函式TreeCreate僅建立瞭如上圖所示的圖，不具有通用性。】

#include <stdio.h>
#include <malloc.h>

typedef char ElemType;
typedef struct tnode
{
    ElemType data;  //節點的值
    struct tnode *hp;   //指向兄弟
    struct tnode *vp;   //指向孩子節點
} TSBNode;
int TreeHeight(TSBNode *t);
void TreeCreate(TSBNode *&
 
t);
void TreeDisp(TSBNode *t);

int TreeHeight(TSBNode *t)
{
    TSBNode *p;
    int m, max = 0;
    if(t==NULL)
        return(0);
    else if(t->vp==NULL)
        return(1);
    else
    {
        //求t的子樹的最大高度max
        p=t->vp;
        while(p!=NULL)
        {
            m=TreeHeight(p);
            if
 
(max<m)
                max=m;
            p=p->hp;
        }
        return(max+1);
    }
}

int main()
{
    TSBNode *tree;
    TreeCreate(tree);
    printf("Height: %d\n", TreeHeight(tree));
    TreeDisp(tree);
    return 0;
}

void TreeCreate(TSBNode *&t)
{
    //本例僅建造說明中特定的樹，以支援演示
    TSBNode *
 
a, *b, *c, *d, *e, *f, *g;
    a = (TSBNode *)malloc(sizeof(TSBNode));
    b = (TSBNode *)malloc(sizeof(TSBNode));
    c = (TSBNode *)malloc(sizeof(TSBNode));
    d = (TSBNode *)malloc(sizeof(TSBNode));
    e = (TSBNode *)malloc(sizeof(TSBNode));
    f = (TSBNode *)malloc(sizeof(TSBNode));
    g = (TSBNode *)malloc(sizeof(TSBNode));
    a->data = 'a';
    b->data = 'b';
    c->data = 'c';
    d->data = 'd';
    e->data = 'e';
    f->data = 'f';
    g->data = 'g';
    a->vp = b;
    a->hp = NULL;
    b->vp = d;
    b->hp = c;
    c->vp = NULL;
    c->hp = NULL;
    d->vp = NULL;
    d->hp = e;
    e->vp = g;
    e->hp = f;
    f->vp = NULL;
    f->hp = NULL;
    g->vp = NULL;
    g->hp = NULL;
    t=a;  //a作為根
    return;
}

void TreeDisp(TSBNode *t)
{
    if(t!=NULL)
    {
        printf("node value: %c\n", t->data);
        printf("%c\'s first child --> ", t->data);
        TreeDisp(t->hp);
        printf("%c\'s brother(its father\'s another child) --> ", t->data);
        TreeDisp(t->vp);
    }
    else
    {
        printf("NULL\n");
    }
}