public class Form { public static void sum(double summa) { int x = (int) summa % 100 / 10; int y = (int) summa % 10; if (summa == 1 || (y == 1 && x != 1)) { System.out.print(" рубль"); } else { if ((y == 2 || y == 3 || y == 4) && x != 1) { System.out.print(" рубля"); } else { System.out.print(" рублей"); } } } }