Question

我试图为每个月编写一个计算CD值的代码。假设您将 10,000 美元放入CD中，年收益率 6,15％。一个月后CD值得：

10000 + 10000 * 6,15 / 1200 = 10051.25

下个月之后：

10051.25 + 10051.25 * 6,15 / 1200 = 10102.76

现在我需要显示用户输入的特定月数的所有结果，所以

month1 =

month2 =

但是我写的这段代码没有打印出来。你能看出什么是错的吗？

提前致谢！

import java.util.Scanner;

public class CDValue {
public static void main(String[] args){
    Scanner input = new Scanner(System.in);

    System.out.println("Enter an amount");
    double amount = input.nextInt();

    System.out.println ("Enter the annual percentage yield");
    double percentage = input.nextDouble();

    System.out.println ("Enter the number of months");
    int months = input.nextInt();

    double worth = amount + amount * percentage / 1200;

    for (int i = 1; i < months; i++) {

        while (i != months) {
            amount = worth;

            worth = amount + amount * percentage / 1200;


        }
    System.out.print(worth);

Answer 1

您不会在

中修改i和months

while (i != months) {
    ....
}

因此，如果满足(i != months)条件，则循环将永远运行，并且您永远不会进入System.out.print语句。

Answer 2

for (int i = 1; i < months; i++) {

while (i != months) {
//you have to modify i or to modify the while condition.
}

如果您在无法退出循环的情况下不修改i

Answer 3

更正代码 -

import java.util.Scanner;

public class CDValue {
public static void main(String[] args){
Scanner input = new Scanner(System.in);

System.out.println("Enter an amount");
double amount = input.nextInt();

System.out.println ("Enter the annual percentage yield");
double percentage = input.nextDouble();

System.out.println ("Enter the number of months");
int months = input.nextInt();

double worth = amount + amount * percentage / 1200;

for (int i = 1; i <= months; i++)
{
System.out.print("Month " + i + " = " + worth);
amount = worth;
worth = amount + amount * percentage / 1200;
}

注意：如果要打印每个月的值，则print语句应位于循环内。对于上面提到的目标，您不需要两个循环。

Answer 4

正如您所知，如果您不修改代码，您的代码将无法退出while循环。只需删除while循环。你的代码应该是这样的：

import java.util.Scanner;

public class CDValue {
public static void main(String[] args){
Scanner input = new Scanner(System.in);

System.out.println("Enter an amount");
double amount = input.nextDouble();

System.out.println ("Enter the annual percentage yield");
double percentage = input.nextDouble();

System.out.println ("Enter the number of months");
int months = input.nextInt();

double worth = amount + amount * percentage / 1200;

for (int i = 1; i < months; i++) {
amount = worth;
worth = amount + amount * percentage / 1200;
}
System.out.print(worth);
}
}

Answer 5

谢谢！通过使用解决它 { System.out.print（＆＃34;月＆＃34; + i +＆＃34; =＆＃34; +值得）; 金额=值; 价值=金额+金额*百分比/ 1200;

而不是while循环。它现在有效:)非常感谢！

代码不生成输出java

5 个答案: