[函数5-2]
bool Isgrowing(BTreeNode* root, ElernKeyType akey)
{ BTreeNode t, f;
if( !SearchBtree( (4) ) ) {
t=f;
while ( (5) ) {
t=t -＞ parent;
}
if( !t )
return TRUE;
}
return FALSE;
}

(4)root,akey,&f (5)t&&t-＞numkeys==M-1，或其等价形式

[函数5-2] bool Isgrowing(BTreeNode* root, ElernKeyType akey) { BTreeNode *t, *f; if( !SearchBtree( (4) ) ) { t=f; while ( (5) ) { t=t -＞ parent; } if( !t ) return TRUE; } return FALSE; }