Mega Code Archive
How to calculate a fibonacci number
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Title: How to calculate a fibonacci number
function fibit(n: Integer): Integer;
var
a, b, i, temp: Integer;
begin
temp := 1;
a := 1;
b := 1;
for i := 1 to n - 1 do
begin
temp := a + b;
a := b;
b := temp;
end;
Result := temp;
end;
function fibrec(n: Integer): Integer;
var
temp: Integer;
begin
temp := 0;
if (n = 0) then temp := 1;
if (n = 1) then temp := 1;
if (n 1) then temp := fibrec(n - 1) + fibrec(n - 2);
Result := temp;
end;
// Example:
procedure TForm1.Button1Click(Sender: TObject);
begin
ShowMessage(IntToStr(fibit(10)));
ShowMessage(IntToStr(fibrec(10)));
end;
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