复利计算3.0

import java.util.Scanner;

public class Money {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        System.out.println("请输入计算方式：1.单利计算 2.复利计算 3.本金计算 4.股票期限计算 5.利率计算 6.资产总值计算"); // 选择计算方式
        int choose = scanner.nextInt();

        if (choose == 1) { // 1.单利计算模式
            danLiJiSuan(scanner);
        } else if (choose == 2) { // 2.复利计算模式
            fuLiJiSuan(scanner);
        } else if (choose == 3) { // 3.本金计算模式
            benJinJiSuan(scanner);
        } else if (choose == 4) { // 4.股票计算模式
            guPiaoQiXian(scanner);
        } else if (choose == 5) { // 5.利率计算模式
            liLvJiSuan(scanner);
        } else if (choose == 6) {
            ziChanZongZhi(scanner);
        }

        scanner.close();

    }

    //资产总值计算模式
    private static void ziChanZongZhi(Scanner scanner) {
        double P;
        double i;
        double N;
        double F;
        System.out.println("请输入本金：");
        P = scanner.nextDouble();
        System.out.println("请输入每年的投资金额：");
        double T = scanner.nextDouble();
        System.out.println("请输入投资年限：");
        N = scanner.nextInt();
        System.out.println("请输入利率：");
        i = scanner.nextDouble();
        //计算
        for (int j = 0; j < N; j++) {
            P = P * (1 + i);
            P = P + T;
        }
        F = P - T;
        System.out.println("资产总值是：" + F);
    }

    //利率计算模式
    private static void liLvJiSuan(Scanner scanner) {
        double P;
        double i;
        double N;
        double F;
        System.out.println("输入本金：");
        P = scanner.nextDouble();
        System.out.println("输入期限：");
        N = scanner.nextDouble();
        System.out.println("输入本息总值：");
        F = scanner.nextDouble();
        // 计算
        i = F / (P * N);
        System.out.println("利率为：" + i);
    }

    //股票期限计算模式
    private static void guPiaoQiXian(Scanner scanner) {
        double P;
        double i;
        double N;
        double F;
        System.out.println("输入本金：");
        P = scanner.nextDouble();
        System.out.println("输入利率：");
        i = scanner.nextDouble();
        System.out.println("输入本息总值：");
        // 计算
        F = scanner.nextDouble();
        N = (F - P) / (i * P);
        System.out.println("期限为：" + N);
    }

    //本金计算模式
    private static void benJinJiSuan(Scanner scanner) {
        double P;
        double i;
        double N;
        double F;
        System.out.println("输入本息总值：");
        F = scanner.nextDouble();
        System.out.println("输入利率：");
        i = scanner.nextDouble();
        System.out.println("输入期限：");
        N = scanner.nextDouble();
        P = F / (1 + i * N);
        System.out.println("应投入本金：" + P);
    }

    //复利计算模式
    private static void fuLiJiSuan(Scanner scanner) {
        double P;
        double i;
        double N;
        double F;
        System.out.println("输入本金：");
        P = scanner.nextDouble();
        System.out.println("输入利率：");
        i = scanner.nextDouble();
        System.out.println("输入期限：");
        N = scanner.nextDouble();
        F = P * Math.pow((1 + i), N);
        System.out.println("本息总值为：" + Math.round(F * 100) / 100.0);
    }

    //单利计算模式
    private static void danLiJiSuan(Scanner scanner) {
        double P;
        double i;
        double N;
        double F;
        System.out.println("输入本金：");
        P = scanner.nextDouble();
        System.out.println("输入利率：");
        i = scanner.nextDouble();
        System.out.println("输入期限：");
        N = scanner.nextDouble();
        F = P + P * i * N;
        System.out.println("本息总值为：" + Math.round(F * 100) / 100.0);
    }