58,453
社区成员
发帖
与我相关
我的任务
分享
public static void main(String[] args) {
// TODO Auto-generated method stub
double sum = 0,num1 = 1;
int round = 1;
while(round<=20) {
sum = sum+num1;
round = round+1;
num1 = num1*(1.0/round);
}
System.out.println("sum="+sum);
}