Title: Convert hex to dec
Question: At times, in the manufacturing applications (and not only), you she can return profit a function that converts a hexadecimal value in decimal. Not you forget to insert in the USESs "math."
Answer:
function HEX_to_DEC(Value: string): Int64;
var
Lunghezza, i : Byte;
ValoreDEC: Int64;
Value2 : string;
begin
Result := 0;
for i := 1 to Length( Value ) do
Value2 := Value[ i ] + Value2;
Value := Value2;
for Lunghezza := Length(Value) - 1 downto 0 do
begin
ValoreDEC := Pos(Value[Lunghezza +1],'0123456789ABCDEF')-1;
if (ValoreDEC 15) then
begin
ShowMessage('Valore inserito non valido');
Result := 0;
exit;
end;
Result := Result + ValoreDEC shl (4 * Lunghezza);
end;
end;