计算存款证的利息

时间:2012-11-27 23:09:20

标签: java

我正在制定一个程序来计算存款证所累积的基本利息。该计划要求投入的金额和期限(最多五年)。根据他们的学期多少年,决定了多少利息。我使用if / else语句来确定感兴趣的比率。然后,我使用循环打印出每年年底帐户中有多少钱。我的问题是,当我运行程序时,钱不计算在内。

这是整个代码。

import java.util.Scanner;

public class CDCalc
{
    public static void main(String args[])
        {
            int Count = 0;
            double Rate = 0;
            double Total = 0;


            Scanner userInput = new Scanner(System.in);

            System.out.println("How much money do you want to invest?");
            int Invest = userInput.nextInt();

            System.out.println("How many years will your term be?");
            int Term = userInput.nextInt();

            System.out.println("Investing: " + Invest);
            System.out.println("     Term: " + Term);

            if (Term <= 1)
            {
            Rate = .3;
            }

            else if (Term <= 2)
            {
            Rate = .45;
            }

            else if (Term <= 3)
            {
            Rate = .95;
            }

            else if (Term <= 4)
            {
            Rate = 1.5;
            }

            else if (Term <= 5)
            {
            Rate = 1.8;
            }


            int count = 1;
                    while(count <= 5)
                {

                    Total = Invest + (Invest * (Rate) / (100.0));

                    System.out.println("Value after year " + count + ": " + Total);
                    count++;
                }       
        }
}

这是我获得10美元投资的结果,只是为了保持简单,以及5年的投资。

How much money do you want to invest?
10
How many years will your term be?
5
Investing: 10
     Term: 5
Value after year 1: 10.18
Value after year 2: 10.18
Value after year 3: 10.18
Value after year 4: 10.18
Value after year 5: 10.18

我的主要问题是我不知道如何让它不断增加总量。我不确定我是否需要使用不同的循环或什么。任何帮助,将不胜感激。

2 个答案:

答案 0 :(得分:1)

  Total = Invest + (Invest * (Rate) / (100.0));

您每年都不会更改Invest的值,因此它不会复合。这就像你每年获得18美元的利息,从账户中退休。

更改Total的{​​{1}}。

答案 1 :(得分:0)

您需要将投资利息添加到总额中:

        Total = Invest;

        int count = 1;
                while(count <= 5)
            {

                Total =  Total +  (Invest * (Rate) / (100.0));

                System.out.println("Value after year " + count + ": " + Total);
                count++;
            }