[MerryDeer]

Hi,

How to make d parameter optimal? like string is S(empty string)

[Gammix]

Declare it in capital as well: D(default_value).

There's everything given in sscanf's thread, you can ctrl+F to search what you need.

[Stinged]

Do you mean optional? If so:

Код:

"D(*)" Replace * with the default value (For example, 6)

If you mean something else, please explain more.