0316-复利计算更新

import java.util.Scanner;

public class Fulijisuan {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("欢迎使用复利计算器！");
/*复利计算公式：F=P*(1+r)^N
* F:复利终值
* P:本金
* r:利率
* N:利率获取时间的整数倍
*/
Scanner scanner=new Scanner(System.in);
System.out.print("复利计算器：计算单利和复利请按1,计算本金请按2,股票请按3，报酬率请按4:");
int num=scanner.nextInt();
if(num==1){
double H=1,F;
System.out.print("请输入本金：");
double P = scanner.nextDouble();
System.out.print("请输入存入年数：");
int N = scanner.nextInt();
System.out.print("请输入利率：");
double r = scanner.nextDouble();
F=P+P*N*r;
System.out.println("单利终值为："+F);
F=0;
for(int i=1;i<=N;i++){
H=(1+r)*H;
}
F=H*P;
System.out.println("复利终值为："+F);

}
if(num==2){
double H=1,P;
System.out.print("请输入复利终值：");
double F = scanner.nextDouble();
System.out.print("请输入存入年数：");
int N = scanner.nextInt();
System.out.print("请输入利率：");
double r = scanner.nextDouble();
for(int i=1;i<=N;i++){
H=(1+r)*H;
}
P=F/H;
System.out.println("本金应为："+P);
}
if(num==3){
double N = 1;
System.out.print("请输入本金：");
double P= scanner.nextDouble();
System.out.print("请输入终值：");
int F= scanner.nextInt();
System.out.print("请输入报酬率：");
double r = scanner.nextDouble();
for(int i=1;i<=F;i++){
N=Math.log(F/P)/Math.log(1+r);
}
System.out.println("存入时间为："+N);
}
if(num==4){
double r= 1;
System.out.print("请输入本金：");
double P= scanner.nextDouble();
System.out.print("请输入终值：");
int F= scanner.nextInt();
System.out.print("请输入存入年数：");
double N = scanner.nextDouble();
for(int i=1;i<=F;i++){
r=Math.pow(F/P,1d/N);
}
System.out.println("报酬率应为："+r);
}

}
}

import java.util.Scanner;
public class Fulijisuan {public static void main(String[] args) { // TODO Auto-generated method stubSystem.out.println("欢迎使用复利计算器！");/*复利计算公式：F=P*(1+r)^N * F:复利终值 * P:本金 * r:利率 * N:利率获取时间的整数倍 */Scanner scanner=new Scanner(System.in);System.out.print("复利计算器：计算单利和复利请按1,计算本金请按2,股票请按3，报酬率请按4:");int num=scanner.nextInt();if(num==1){double H=1,F; System.out.print("请输入本金："); double P = scanner.nextDouble(); System.out.print("请输入存入年数："); int N = scanner.nextInt(); System.out.print("请输入利率："); double r = scanner.nextDouble(); F=P+P*N*r; System.out.println("单利终值为："+F); F=0; for(int i=1;i<=N;i++){ H=(1+r)*H; } F=H*P; System.out.println("复利终值为："+F);
}if(num==2){ double H=1,P; System.out.print("请输入复利终值："); double F = scanner.nextDouble(); System.out.print("请输入存入年数："); int N = scanner.nextInt(); System.out.print("请输入利率："); double r = scanner.nextDouble(); for(int i=1;i<=N;i++){ H=(1+r)*H; } P=F/H; System.out.println("本金应为："+P);}if(num==3){double N = 1;System.out.print("请输入本金："); double P= scanner.nextDouble(); System.out.print("请输入终值："); int F= scanner.nextInt(); System.out.print("请输入报酬率："); double r = scanner.nextDouble(); for(int i=1;i<=F;i++){ N=Math.log(F/P)/Math.log(1+r); } System.out.println("存入时间为："+N);}if(num==4){double r= 1;System.out.print("请输入本金："); double P= scanner.nextDouble(); System.out.print("请输入终值："); int F= scanner.nextInt(); System.out.print("请输入存入年数："); double N = scanner.nextDouble(); for(int i=1;i<=F;i++){ r=Math.pow(F/P,1d/N); } System.out.println("报酬率应为："+r);} }}