[Slice]

There is one way to do it.. But it's a bit ugly.

pawn Код:

stock MyFunc(
    {Float, _, unused}:var1 = unused:0,
    {Float, _, unused}:var2 = unused:0,
    {Float, _, unused}:var3 = unused:0,
    {Float, _, unused}:var4 = unused:0,
    tag1 = tagof(var1),
    tag1 = tagof(var2),
    tag1 = tagof(var3),
    tag1 = tagof(var4)
) {
    if (tagof(var1) == tagof(unused:)) {
        num_vars = 0;
    } else if (tagof(var2) == tagof(unused:)) {
        num_vars = 1;
    } else if (tagof(var3) == tagof(unused:)) {
        num_vars = 2;
    } else if (tagof(var4) == tagof(unused:)) {
        num_vars = 3;
    } else {
        num_vars = 4;
    }

    var values[4], tags[4];
    values[0] = _:var1;
    values[1] = _:var2;
    values[2] = _:var3;
    values[3] = _:var4;
    tags[0] = tag1;
    tags[1] = tag2;
    tags[2] = tag3;
    tags[3] = tag4;

    // you now have values and tags in an array
    // if you want to allow many arguments, you must manually add more
}