№1 КОНТРОЛЬНАЯ РАБОТА по дисциплине «Структуры и алгоритмы обработки данных»
Задание 1
1. Организовать структуру для хранения целых, вещественных или символьных данных на языке высокого уровня.
2. Проверить корректность ввода, хранения и вывода данных.
Структура: Товар-Код, Название, Цена, Производитель, СрокГодности;
Type
data = record
tovar_kod :string[50] ;
nazvanie : string[50];
cena : Real;
proizvoditel:string[50];
srok_Godnost:string[50];
end;
var
Form1: TForm1;
d:Array[1..50] of data;
x:Integer;
implementation
{$R *.dfm}
procedure TForm1.Button1Click (Sender: TObject);
begin
x:=x+1;
Label7.Caption:=IntToStr (x);
d[x].tovar_kod:=(Edit1.Text);
d[x].nazvanie:=(Edit2.Text);
d[x].cena:=StrToFloat (Edit3.Text);
d[x].proizvoditel:=(Edit4.Text);
d[x].srok_Godnost:=(Edit5.Text);
Edit1.Clear;
Edit2.Clear;
Edit3.Clear;
Edit4.Clear;
Edit5.Clear;
end;
procedure TForm1.Button2Click (Sender: TObject);
var i:integer;
begin
for i := 1 to x do
begin
ListBox1.Items.Add ((d[i].tovar_kod));
ListBox1.Items.Add ((d[i].nazvanie));
ListBox1.Items.Add (FloatToStr (d[i].cena));
ListBox1.Items.Add ((d[i].proizvoditel));
ListBox1.Items.Add ((d[i].srok_Godnost));
ListBox1.Items.Add ('');
ListBox1.Items.SaveToFile ('bd.txt');
end;
end;
procedure TForm1.Edit1KeyPress (Sender: TObject; var Key: Char);
const
AllowedChars: string = '0123456789';
var
i: Integer;
Ok: Boolean;
begin
i := 0;
Ok := False;
{ If you erase next line, user won't be able to type backspace }
if Key = #8 then Ok := True;
repeat
i := i + 1;
if Key = AllowedChars[i] then Ok := True;
until (Ok) or (i = Length (AllowedChars));
if not Ok then Key := #0;
end;
procedure TForm1.FormCreate (Sender: TObject);
begin
x:=0;
end;
procedure TForm1.Edit2KeyPress (Sender: TObject; var Key: Char);
const
AllowedChars: string = 'abcdefghijklmnopqrstuvwxyzйцукенгшщзхъфывапролджэячсмитьбю';
var
i: Integer;
Ok: Boolean;
begin
i := 0;
Ok := False;
{ If you erase next line, user won't be able to type backspace }
if Key = #8 then Ok := True;
repeat
i := i + 1;
if Key = AllowedChars[i] then Ok := True;
until (Ok) or (i = Length (AllowedChars));
if not Ok then Key := #0;
end;
procedure TForm1.Edit3KeyPress (Sender: TObject; var Key: Char);
const
AllowedChars: string = '0123456789';
var
i: Integer;
Ok: Boolean;
begin
i := 0;
Ok := False;
{ If you erase next line, user won't be able to type backspace }
if Key = #8 then Ok := True;
repeat
i := i + 1;
if Key = AllowedChars[i] then Ok := True;
until (Ok) or (i = Length (AllowedChars));
if not Ok then Key := #0;
end;
procedure TForm1.Edit4KeyPress (Sender: TObject; var Key: Char);
const
AllowedChars: string = 'abcdefghijklmnopqrstuvwxyzйцукенгшщзхъфывапролджэячсмитьбю0123456789';
var
i: Integer;
Ok: Boolean;
begin
i := 0;
Ok := False;
{ If you erase next line, user won't be able to type backspace }
if Key = #8 then Ok := True;
repeat
i := i + 1;
if Key = AllowedChars[i] then Ok := True;
until (Ok) or (i = Length (AllowedChars));
if not Ok then Key := #0;
end;
procedure TForm1.Edit5KeyPress (Sender: TObject; var Key: Char);
const
AllowedChars: string = '0123456789';
var
i: Integer;
Ok: Boolean;
begin
i := 0;
Ok := False;
{ If you erase next line, user won't be able to type backspace }
if Key = #8 then Ok := True;
repeat
i := i + 1;
if Key = AllowedChars[i] then Ok := True;
until (Ok) or (i = Length (AllowedChars));
if not Ok then Key := #0;
end;
end.
