如果要执行某一操作需满足以下三个条件,
a>b
a<c
d>f怎样书写才比较规范?是这样?
if a>b then
  begin
    if a<c then
      begin
        if d>f then
          begin
            ..........
            .......... 
          end;
      end;
  end;
还是这样?
if a>b then if a<c then if d>f then
  begin
    ..........
    .......... 
  end;