java自增

package operator;

public class Demo01 {
    public static void main(String[] args) {
        int a = 3;
        int b = a++;//先赋值再加1
        System.out.println(a);//4
        int c = ++a;//先加1在赋值
        System.out.println(a);//5
        System.out.println(b);//3
        System.out.println(c);//5

        //幂运算
        System.out.println("==========");
        double math = Math.pow(2,3);//2的3次方
        System.out.println(math);
    }
}