public class price {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
double price ;
//期望输出效果:将价格每隔三位分割如5,234,222.2343
price = scanner.nextDouble();
String pri = price+"";
String part[] = pri.split(".");//以小数点对价格进行分割;
if(part[0]==null)
return;
StringBuffer sb = new StringBuffer(part[0]);
for (int i = sb.length()%3; i <sb.length() ; i+=3) {
if(i!=0)
sb.insert(i,',');
}
System.out.println(sb+"."+part[1]);
}
}