adnValues:

extern "C" __declspec(dllexport)
double adnValues(double x, double y) {
double z;
z = x + y;
cout << x << " " << y << " " << z << endl;
return(z);
}

##</code><code>##

use Win32::API;

$fld1 = $ARGV[0];
$fld2 = $ARGV[1];

$myFunc =
Win32::API->new('adnValues', 'double adnValues(double x, double
y)');
$outval = $myFunc->Call($fld1, $fld2);
print "$outval";

##</code><code>##

e.g.
$myFunc = Win32::API->new('adnValues', 'double adnValues()');
$outval = $myFunc->Call();

##</code><code>##

$myFunc = Win32::API->new('adnalues', 'adnValues', 'DD', 'D')