1 import java.util.Scanner;
 2
 3 public class Fulijisuan {
 4
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7         double N=1;
 8         Scanner scanner=new Scanner(System.in);
 9         System.out.print("请选择复利计算(1)or单利计算(2)or计算本金(3)or投资年数(4)or报酬率(5)or年资产总值(6)or月资产总值(7):");
10         int choose=scanner.nextInt();
11
12         if(choose==1){
13             System.out.print("请输入本金：");
14             float P=scanner.nextInt();
15             System.out.print("请输入利率：");
16             float i=scanner.nextFloat();
17             System.out.print("存入时间：");
18             float n=scanner.nextFloat();
19             fuli(N, P, i, n);
20         }
21         if(choose==2){
22             System.out.print("请输入本金：");
23             float P=scanner.nextInt();
24             System.out.print("请输入利率：");
25             float i=scanner.nextFloat();
26             System.out.print("存入时间：");
27             float n=scanner.nextFloat();
28             danli(P, i,n);
29         }
30         if(choose==3){
31             double money;
32             float year=30;
33             float total=3000000;
34             double a=0.30;
35             for(int j=1;j<=year;j++){
36                 N=(1+a)*N;
37             }
38             money=total/N;
39             System.out.println("需要本金："+money);
40         }
41         if(choose==4){
42             double baochoulv=0.1;
43             double money=1000000;
44             double year;
45             year=2000000/(money*baochoulv);
46             System.out.print("经过"+year+"年100万变成200万");
47         }
48         if(choose==5)
49         {
50             double money1=1000000;
51             double money2=2000000;
52             double year=10;
53             double baochoulv;
54             baochoulv=money2/(money1*year);
55             System.out.print("报酬率为："+baochoulv);
56         }
57         if(choose==6)
58         {
59             double money=30000;
60             for(int i=1;i<=30;i++)
61             {
62                 money=(money*0.03)+money;
63             }
64             System.out.print("30年后的总产值为："+money);
65         }
66         if(choose==7)
67         {
68             double money=3000;
69             for(int i=1;i<=30*12;i++)
70             {
71                 money=(money*0.03)+money;
72             }
73             System.out.print("30年后的总产值为："+money);
74         }
75
76     }
77
78     private static void danli(double P, double i,double n) {
79         double G;
80
81         G=P+P*i*n;
82         System.out.print("单利终值为："+G);
83     }
84
85     private static void fuli(double N, double P, double i, double n) {
86         for(int j=1;j<=n;j++){
87
88             N=(1+i)*N;
89         }
90         double F;
91         F=P*N;
92         System.out.print("复利终值为："+F);
93     }
94
95
96 }