复利计算器

import java.util.Scanner;

public class Fulijisuan {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        double F=0;
        double singlesum=0;
        double doublesum=0;
        double m=0;
        Scanner scanner =new Scanner(System.in);
        System.out.println("1:复利计算\n2:单利计算\n3:复利计算求本金\n4:复利计算求年限\n5:复利计算求年率");
        System.out.println("6:复利计算每年定投");
        System.out.print("请输入您要求的:");
        int  n = scanner.nextInt();    
        switch (n){
        case 1:
            System.out.print("请输入你本金:");
            double p = scanner.nextDouble();
            System.out.print("请输入您的利率:");
            double i = scanner.nextDouble();
            System.out.print("请输入您的年限:");
            double year = scanner.nextDouble();
            for(int j=1;j<=year;j++){
                F=p*i;
                p=p+F;
            }
            doublesum=p;
            System.out.print("复利后的终值为"+doublesum+"");
            break;
        case 2:
            System.out.print("请输入你本金:");
            double p2 = scanner.nextDouble();
            System.out.print("请输入您的利率:");
            double i2 = scanner.nextDouble();
            System.out.print("请输入您的年限:");
            double year2 = scanner.nextDouble();
            for(int j=1;j<=year2;j++){
                F=p2*i2;
                m=m+F;
            }
            singlesum=p2+m;
            System.out.print("单利后的终值为"+singlesum+"");
            break;
        case 3:
            System.out.print("请输入你总额:");
            double sum = scanner.nextDouble();
            System.out.print("请输入你利率:");
            double i3 = scanner.nextDouble();
            System.out.print("请输入你期限:");
            double year3 = scanner.nextDouble();
            i3=1+i3;
            for(int j=1;j<=year3;j++){
                sum=sum/i3;
            }
            p=sum;
            System.out.print("应存本金为"+p+"");
            break;
        case 4:
            int year4=0;
            System.out.print("请输入你本金:");
            double p4 = scanner.nextDouble();
            System.out.print("请输入你利率:");
            double i4 = scanner.nextDouble();
            System.out.print("请输入你总额:");
            double sum4 = scanner.nextDouble();
            while(p4<sum4){
                for(int j=1;j<100;j++);{
                    p4=p4*(1+i4);
                    year4++;
                }
            }
            System.out.print("到"+sum4+"的时间要"+year4+"年");
            break;
        case 5:
            double i5;
            System.out.print("请输入你本金:");
            double p5 = scanner.nextDouble();
            System.out.print("请输入你总额:");
            double sum5 = scanner.nextDouble();
            System.out.print("请输入你期限:");
            double year5 = scanner.nextDouble();
            i5=Math.pow(sum5/p5, 1/year5)-1;
            System.out.print("在"+year5+"年内从"+p5+"到"+sum5+"的利率为:"+(float)i5+"");
            break;
        case 6:
            System.out.print("请输入你本金:");
            double p6 = scanner.nextDouble();
            System.out.print("请输入你利率:");
            double i6 = scanner.nextDouble();
            System.out.print("请输入你期限:");
            double year6 = scanner.nextDouble();
            double F6=p6;
            for(int j=1;j<=year6;j++){
                p6=p6*(1+i6);
                if(year6!=j)
                    p6=p6+F6;
            }
            System.out.print("每年定投的产生的总额:"+p6+"");
            }
    }
}

 

 

实验回顾

   对于我这种编写代码能力有限的同学来说 这个复利计算器的实现 有点难度，所以是在同学帮助下完成的。。。博客简短;水平有限.望老师们见谅，我会在接下来的学习过程中慢慢提高自己的编码能力的。