Generate an interest table - CSharp Language Basics

CSharp examples for Language Basics:decimal

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Description

Generate an interest table

Demo Code

using System;/*from  w  w  w . j  ava2 s  .  com*/
public class Program
{
   public static void Main(string[] args)
   {
      decimal principal = 0M;
      decimal interest = 0M;
      decimal duration = 0M;
      InputInterestData(ref principal, ref interest, ref duration);
      Console.WriteLine("Principal     = " + principal);
      Console.WriteLine("Interest      = " + interest + "%");
      Console.WriteLine("Duration      = " + duration + " years");
      OutputInterestTable(principal, interest, duration);
   }
   public static void InputInterestData(ref decimal principal,ref decimal interest,ref decimal duration)
   {
      principal = InputPositiveDecimal("principal");
      interest = InputPositiveDecimal("interest");
      duration = InputPositiveDecimal("duration");
   }
   public static decimal InputPositiveDecimal(string prompt)
   {
      while(true)
      {
         Console.Write("Enter " + prompt + ":");
         string input = Console.ReadLine();
         decimal value = Convert.ToDecimal(input);
         if (value >= 0)
         {
            return value;
         }
         Console.WriteLine(prompt + " cannot be negative");
         Console.WriteLine("Try again");
         Console.WriteLine();
      }
   }
   public static void OutputInterestTable(decimal principal,
   decimal interest,
   decimal duration)
   {
      for (int year = 1; year <= duration; year++)
      {
         decimal interestPaid;
         interestPaid = principal * (interest / 100);
         principal = principal + interestPaid;
         principal = decimal.Round(principal, 2);
         Console.WriteLine(year + "-" + principal);
      }
   }
}

Result


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