code.txt

实现词法分析,用VB写的对结果进行分类显示

var x,y,z,x1,x2;
 begin
   x:=2;
   y:=3;
   x1:=8;
   x2:=9;
 if (x+5>=y*y) then
  begin 
   z:=y*y-x;
    z:=z+x*x;
 end
 else
 z:=x+y;
 prn z;
end.