Declare array of String

your question is about Strings and your code example is about char array's. These are different datatypes.

Think you need something like

#define ARRAYSIZE 10
String results[ARRAYSIZE] = { "uno", "duo", "tri" };

void setup()
{
  Serial.begin(115200);
  for (int i =0; i< ARRAYSIZE; i++) Serial.println(results[i]);
}

void loop()
{
}