converting int or byte to ascii

outsider:
How 'bout itoa?

void setup()

{
  Serial.begin(9600);
  char buffer[6] = " ";
  int id = 256;
  itoa(id,buffer,10);
  for(byte q = 0;q < 6;q++)
  {
    Serial.write(buffer[q]);
    Serial.println();
  }
  Serial.println(buffer); 
}






2
5
6

256

where is your #include stdlib.h??