ssdf.pas

本光盘是《Delphi 7应用教程》一书的配套光盘

unit ssdf;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Edit3: TEdit;
    Label4: TLabel;
    Edit4: TEdit;
    Label5: TLabel;
    Edit5: TEdit;
    Label6: TLabel;
    Edit6: TEdit;
    Label7: TLabel;
    Edit7: TEdit;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;


implementation
  Const
    N=6;

{$R *.dfm}
//根据参数s数组中存放的评分用来求选手的最后得分，并通过参数aver带回
 Procedure GetScore(S:array of real; var aver:real);
   var
     i:integer;
     max_s,min_s:real;
     Sum:real;
 begin
    Sum:=0;//分数和
    max_s:=s[0];min_s:=s[0];//最高得分和最低得分为第一个评分
    For i:=0 to N-1  Do//该循环求最高得分和最低得分并把所有得分加起来
       Begin
          if max_s<s[i] then
             max_s:=s[i];
          if min_s>s[i] then
             min_s:=s[i];
          sum:=sum+s[i];
      end;
    aver:=(sum-min_s-max_s)/(N-2);//求平均分
 end;
procedure TForm1.Button1Click(Sender: TObject);
var
  ssdf:real;
  Scores:array[0..N-1]  of real;//存放得分的数组
begin
   Scores[0]:=strtofloat(edit1.text);
   Scores[1]:=strtofloat(edit2.text);
   Scores[2]:=strtofloat(edit3.text);
   Scores[3]:=strtofloat(edit4.text);
   Scores[4]:=strtofloat(edit5.text);
   Scores[5]:=strtofloat(edit6.text);
   GetScore(Scores,ssdf); //调用过程
   Edit7.Text:=floattostr(ssdf);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  edit1.Text:='';
  edit2.Text:='';
  edit3.Text:='';
  edit4.Text:='';
  edit5.Text:='';
  edit6.Text:='';
  edit7.Text:='';
end;

end.