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Article #17834: Covert string of (zeros and ones) to binary.

 Question and Answer Database

FAQ2834D.txt   Covert string of (zeros and ones) to binary.
Category   :Object Pascal
Platform    :All
Product    :All 32 bit  

Question:
How can I convert a string of zeros and ones to the integer it
represents?


Answer:
The following example shows how to convert a "BinaryString"
to a long integer by using the shl (shift bits left) macro.

Example:

function BinStringToLongInt(BinString : string) : longint;
var
  i : integer;
  Num : longint;
begin
  Num := 0;
  for i := 1 to length(BinString) do
    if BinString[i] = '1' then
      Num := (Num shl 1) + 1 else
      Num := (Num shl 1);
  Result := Num;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
 Memo1.Lines.Add(IntToStr(BinStringToLongInt('11111111')));
end;

7/16/98 4:31:28 PM
 

Last Modified: 01-SEP-99