wcscat() Function in Arduino

Hi,
Is it possible to use the wcscat() function in Arduino?
I want to concatenate two wide strings (Unicode strings) together.
When using this function, Arduino show Error !
What's the solution ?

void setup() {
 wchar_t wcs[80];
 wcscat (wcs,L"these ");
 wcscat (wcs,L"wide strings ");
}

void loop() {
 // put your main code here, to run repeatedly:

}

use strcat()

char wcs[80] = "";

strcat(wcs, "these");

strcat(wcs, " wide strings ");

DON'T post screen shots of your code! Post the code!

But why not use strcat()?

arduino_new:
use strcat()

char wcs[80] = "";

strcat(wcs, "these");

strcat(wcs, " wide strings ");

Thanks, but I need to use Unicode characters (Arabic Character) that are two bytes, also have to use wchar_t to save letters.

septillion:
DON'T post screen shots of your code! Post the code!

But why not use strcat()?

I'm sorry, corrected.
I need to use Unicode characters (Arabic Character).

Arduino doesn't use Unicode but UTF-8. Why not stick to that?

septillion:
Arduino doesn't use Unicode but UTF-8. Why not stick to that?

I want to convert a code for the Arduino.
This code is for writing Arabic characters on the OLED Screen.

If it's already written for an OLED (which sound like micro controller / Arduino to me) why do you need to convert it?

If you want to convert it from another micro / IDE I would suggest to convert it to UTF-8 because that's what the IDE supports and libraries that use more then plain (extended) ASCII will most likely use UTF-8 as well.

Arduino does not have any built-in support for Unicode or other wide strings.
Strcat might still work, with a lot title casting, if there are no embedded nulls.

septillion:
If it's already written for an OLED (which sound like micro controller / Arduino to me) why do you need to convert it?

If you want to convert it from another micro / IDE I would suggest to convert it to UTF-8 because that's what the IDE supports and libraries that use more then plain (extended) ASCII will most likely use UTF-8 as well.

Thanks.

westfw:
Arduino does not have any built-in support for Unicode or other wide strings.
Strcat might still work, with a lot title casting, if there are no embedded nulls.

Thanks.