2.cpp

这是一个计算器的程序

#include"btrechar.h"
void copytree(bitre t,bitre&tc)
{if(t!=NULL)
  {tc=(bitre)malloc(sizeof(struct bnode));
   tc=t;
   copytree(t->lchild,tc->lchild);
   copytree(t->rchild,tc->rchild);
  }
}
void main()
{bitre tree2,t;
load_bitre_file(t,"bitres\\full41.cbt");
display_bitre("t",t);
copytree(t,tree2);
display_bitre("copytree",tree2);
}