Question

import java.util.Scanner;

class objectDetails {

    double w, t, res, amt;

    String ob;

    void getDetails(int n) {
        Scanner get = new Scanner(System.in);

        int limit = n;

        System.out.println("Enter Object Details\n");

        for (int i = 0; i < limit; i++) {
            System.out.println("Name of appliance:\n");

            ob = get.next();

            System.out.println("Enter the amount of watts per hour:\n");

            w = get.nextDouble();

            System.out.println("Enter the amount of time in hours used:\n");

            t = get.nextDouble();

            res = (w * t) / 1000;

            amt = (res * 4.2);

            System.out.println("The amount in ruppes payable=" + amt);

        }
    }
}

我想要循环中所有迭代的amt之和。添加所有amt并显示应付总金额。我正在尝试自学的编码新手。谢谢

Answer 1

在循环之前，

double total = 0;

然后在循环中（在计算金额后）

total += amt;

最后在循环之后，类似

System.out.printf("The total is %.2f%n", total);

Answer 2

分配一个全局变量并将值存储在该变量中，最后打印该全局变量的值。多数民众赞成

如何从for循环中获取元素的总和？

2 个答案: