Compute the regular payments for a loan

   
 
/*
C# A Beginner's Guide
By Schildt

Publisher: Osborne McGraw-Hill
ISBN: 0072133295
*/
 /* 
   Project 2-3 
 
   Compute the regular payments for a loan. 
 
   Call this file RegPay.cs 
*/ 
 
using System; 
 
public class RegPay {    
  public static void Main() {    
    decimal Principal;    // original principal 
    decimal IntRate;      // interest rate as a decimal, such as 0.075 
    decimal PayPerYear;   // number of payments per year 
    decimal NumYears;     // number of years 
    decimal Payment;      // the regular payment 
    decimal numer, denom; // temporary work variables 
    double b, e;          // base and exponent for call to Pow() 
 
    Principal = 10000.00m; 
    IntRate = 0.075m; 
    PayPerYear = 12.0m; 
    NumYears = 5.0m; 
 
    numer = IntRate * Principal / PayPerYear; 
  
    e = (double) -(PayPerYear * NumYears); 
    b = (double) (IntRate / PayPerYear) + 1; 
 
    denom = 1 - (decimal) Math.Pow(b, e); 
     
    Payment = numer / denom; 
 
    Console.WriteLine("Payment is {0:C}", Payment); 
  }    
}