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| var
Form1: TForm1;
kol: integer;
obr: array[0..300, 0..300] of real;
implementation
{$R *.dfm}
procedure Obratis;
var k, i, j: integer;
b: array[0..300, 0..300] of real;
begin
for k:=0 to kol - 1 do
begin
for i:=0 to kol - 1 do
for j:=0 to kol - 1 do
begin
if (i=k) and (j=k) then
b[i,j] := 1/obr[i,j];
if (i=k) and (j<>k) then
b[i,j] := -obr[i,j]/obr[k,k];
if (i<>k) and (j=k) then
b[i,j] := obr[i,k]/obr[k,k];
if (i<>k) and (j<>k) then
b[i,j] := obr[i,j] - obr[k,j] * obr[i,k]/obr[k,k];
end;
for i:= 0 to kol - 1 do
for j:= 0 to kol - 1 do obr[i, j]:= b[i, j];
end;
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
form1.Close;
end;
procedure TForm1.SpinEdit1Change(Sender: TObject);
begin
kol:= SpinEdit1.Value;
StringGrid1.ColCount:= kol;
StringGrid1.RowCount:= kol;
StringGrid2.ColCount:= kol;
StringGrid2.RowCount:= kol;
end;
procedure TForm1.Button1Click(Sender: TObject);
var i, j: integer;
begin
randomize;
for i:= 0 to kol - 1 do
for j:= 0 to kol - 1 do
StringGrid1.Cells[i, j]:= IntToStr(random(200) - 100);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
kol:= 1;
end;
procedure TForm1.Button2Click(Sender: TObject);
var i, j: integer;
i1, j1: integer;
begin
i1:= 1;
j1:= 1;
try
for i:= 0 to kol - 1 do
for j:= 0 to kol - 1 do
begin
i1:= i;
j1:= j;
obr[i, j]:= StrToFloat(StringGrid1.Cells[j, i]);
end;
except
ShowMessage('Ошибка при вводе числа в столбце ' + IntToStr(j1 + 1) + ' строке ' + IntToStr(i1 + 1) + '!');
exit;
end;
Obratis;
for i:= 0 to kol - 1 do
for j:= 0 to kol - 1 do
StringGrid2.Cells[i, j]:= FloatToStr(Round(1000*obr[j, i])/1000);
end;
end. |
(
