cock.pl

编译原理课程设计 PL0编译器 java版本

const z=0;
var head,foot,cock,rabbit,n;
begin
   n:=z;
   read(head,foot);
   cock:=1;
   while cock<=head do
   begin
      rabbit:=head - cock;
      if cock*2+rabbit*4=foot then
      begin
         write(cock,rabbit);
         n:=n+1
      end;
      cock:=cock+1;
   end;
   if n=0 then write(0,0)
end.