ANSI to UTF8

[Janusch]

Hello!

I'm trying to convert ANSI characters to UTF8 that but it doesn't
work correctly.

I used the following:

void main() {
	writeln(convertToUTF8("ä"));
}

string convertToUTF8(string text) {

	string result;

	for (uint i=0; i<text.length; i++) {
		char ch = text[i];
		if (ch < 0x80) {
			result ~= ch;
		} else {
			result ~= 0xC0 | (ch >> 6);
			result ~= 0x80 | (ch & 0x3F);
		}
	}
	return result;

}

But writeln doesn't print anything (only a blank line), but not my
character. The same problem exists for similar characters like ü or ö.

Is there anything I'm doing wrong?