public class Test5 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入需要相加的数(输入x结束)：");
        int sum = 0;
        int i = 0;
        while (scanner.hasNextDouble()){
            double i1 = scanner.nextDouble();
            sum +=i1;
            i++;
        }
        System.out.println("您输入了"+i+"个数，相加的数值为："+sum);
    }
}