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| unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type uk=^queue;
queue=record
dat: real;
dt: real;
nx: uk;
end;
type
TForm1 = class(TForm)
Button1: TButton;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1; qe,qb: uk; I:integer;
implementation
{$R *.dfm}
procedure add(var qb,qe:uk; el1: real; el2:real);
var p:uk;
begin
new(p);
p^.dat:=el1;
p^.dt:=el2;
p^.nx:=nil;
if qb<>nil then begin qe^.nx:=p; qe:=p end else qb:=p;
end;
procedure del(var qb:uk);
var p:uk;
begin
p:=qb;
qb:=qb^.nx;
dispose(p);
end;
procedure delall(var qb,qe: uk);
begin
qe:=nil; if qb=nil then showmessage('очередь пуста');
while qb<>nil do
del(qb);
end;
procedure TForm1.Button1Click(Sender: TObject);
var p:uk; st:string;
begin
qb:=nil;
qe:=nil;
for i:=1 to 10 do add(qb,qe,random(5),random);
p:=qb;
while p<>nil do
begin
st:=floattostr(p^.dat)+'('+floattostr(p^.dt)+')';
memo1.Lines.Add(st); p:=p^.nx;
st:='';
end;
memo1.Lines.Add(st);
del(qb); del(qb);
p:=qb;
while p<>nil do
begin
st:=floattostr(p^.dat)+'('+floattostr(p^.dt)+')';
memo1.Lines.Add(st); p:=p^.nx;
st:='';
end;
memo1.Lines.Add(st);
delall(qb,qe);
p:=qb;
while p<>nil do
begin
st:=floattostr(p^.dat)+'('+floattostr(p^.dt)+')';
memo1.Lines.Add(st); p:=p^.nx;
st:='';
end;
memo1.Lines.Add(st);
end;
end. |
(
