a
       b
     c   d
           e

btree tree_build(btree t,FileTree Vec_G_Tree,int line,int vec_size)
{
		t=tree_insert(t,Vec_G_Tree.info);
		if(Vec_G_Tree.level>0)
		{
			put_left(t,tree_build(get_left(t),Vec_G_Tree,++line,vec_size));
		if(Vec_G_Tree.level==0)
				put_right(t,tree_build(get_right(t),Vec_G_Tree,++line,vec_size));			
		}
		return t;
}