3-2 Java中的算术运算符

public class HelloWorld{ public static void main(String[] args) { int age1=24; int age2=18; int age3=36; int age4=27; System.out.println("年龄总和："+sum); System.out.println("平均年龄："+avg); System.out.println("年龄差值："+minus); System.out.println("自减后的年龄："+newAge); } }