public class J3_2_1 {
  public static void main (String[] args){
    String name = "黃";
  	boolean sex = true;
  	if (sex) {
  	  name = name + "小姐";
  	  System.out.println(name + "，妳好！");
    } else {
  	  name = name + "先生";
  	  System.out.println(name + "，你好！");
  	}
  }
}