finished exercise 31

Author: Jonathan-Birkey

src/com/github/jonathanbirkey/chapter05/Exercise31.java

@@ -2,14 +2,47 @@
  * @author : Jonathan Birkey
  * @mailto : [email protected]
  * @created : 28Feb2024
- *     <p>(Display leap years) Write a program that displays all the leap years, 10 per line, from
- *     101 to 2100, separated by exactly one space. Also display the number of leap years in this
- *     period.
+ *     <p>(Financial application: compute CD value) Suppose you put $10,000 into a CD with an annual
+ *     percentage yield of 5.75%. After one month, the CD is worth
+ *     <p>10000 + 10000 * 5.75 / 1200 = 10047.92
+ *     <p>After two months, the CD is worth
+ *     <p>10047.91 + 10047.91 * 5.75 / 1200 = 10096.06
+ *     <p>After three months, the CD is worth
+ *     <p>10096.06 + 10096.06 * 5.75 / 1200 = 10144.44
+ *     <p>and so on.
+ *     <p>Write a program that prompts the user to enter an amount (e.g., 10000), the annual
+ *     percentage yield (e.g., 5.75), and the number of months (e.g., 18) and displays a table as
+ *     presented in the sample run.
+ *     <p>Enter the initial deposit amount: 10000
+ *     <p>Enter annual percentage yield: 5.75
+ *     <p>Enter maturity period (number of months): 18
+ *     <p>Month CD Value
+ *     <p>1 100047.92
+ *     <p>2 10096.06
+ *     <p>...
+ *     <p>17 10846.57
+ *     <p>18 10898.54
  */
 package com.github.jonathanbirkey.chapter05;
 
+import java.util.Scanner;
+
 public class Exercise31 {
   public static void main(String[] args) {
-    // TODO: solve
+    Scanner input = new Scanner(System.in);
+    System.out.print("Enter the initial deposit amount: ");
+    double amount = input.nextDouble();
+    System.out.print("Enter annual percentage yield: ");
+    double APY = input.nextDouble();
+    System.out.print("Enter maturity period (number of months): ");
+    int months = input.nextInt();
+    input.close();
+
+    System.out.printf("Month\tCD Value\n");
+
+    for (int i = 1; i <= months; i++) {
+      amount = amount + (amount * (APY / 1200));
+      System.out.printf("%-7d %.2f\n", i, amount);
+    }
   }
 }