初学JAVA——代码练习，阶乘分之一相加

public class Jiecheng {

    public static void main(String[] args) {

        double C = 1.0;

        double M = 0;

        for (double B = 1.0; B <= 4; B++) {
            C = C * B;

            M = M + 1 / C;

        }
        System.out.println("S=" + M);

    }
}