与算术运算符一起使用

public class Main {

  public static void main(String[] args) {

    int a = 21, b = 6;//nowjava - 时  代  Java 提 供

    int c = a + b;

    int d = a - b;

    int e = a * b;

    int f = a / b;

    int g = a % b;

    a++;

    b--;


    System.out.println(a + " and " + b);

    /*
    来 自*
     NowJava.com - 时  代  Java
    */

  }


}