打印族谱
int main()
{
bitree bt;int m=0;
//cout<<"please input char:"<<endl;
createbitree(bt);
cout<<"generation output:"<<endl;
cout<<"all number of people:"<<allnodes(bt)<<endl;//输出总人数
outputbitree(bt，m); // m记录层次
destroybitree(bt);
return 0;