FOR loops

A FOR loop repeats code a known number of times. The loop variable must be an Integer declared in var:

for i := 1 to 5 do
  memOutput.Lines.Add('Lap ' + IntToStr(i));

for i := 10 downto 1 do    // counts backwards
  memOutput.Lines.Add(IntToStr(i));

If the body has more than one statement, wrap it in begin … end;. The loop variable takes each value in turn — that is what makes times tables, totals and patterns possible.

Your task

Print the full times table (1× to 12×) of any number the user enters, like the poster on your primary school wall:

1 x 7 = 7
2 x 7 = 14
…
12 x 7 = 84

procedure TfrmTables.btnShowClick(Sender: TObject);
var
  i, iNum : Integer;
begin
  iNum := StrToInt(edtNumber.Text);
  for i := 1 to 12 do
    memOutput.Lines.Add(IntToStr(i) + ' x ' + IntToStr(iNum) + ' = ' + IntToStr(i * iNum));
end;