public void C7_11_1_PresentValueOfOrdinaryAnnuity()
{
// Present Value of an ordinary annuity
var A = 100.0;
var interest = 0.09;
var numberOfPeriods = 8;
var interestEngine = new InterestRateCalculator(numberOfPeriods, interest);
Debug.WriteLine("**PV, ordinary annuity: {0}", interestEngine.PresentValueOrdinaryAnnuity(A));
}
public static void Main()
{
// Future value of a sum of money invested today
int nPeriods = 6; // 6 years
double P = Math.Pow(10.0, 7); // Amount invested now, 10 million
double r = 0.092; // 9.2% interest per year
InterestRateCalculator interestEngine = new InterestRateCalculator(nPeriods, r);
double fv = interestEngine.FutureValue(P);
Console.WriteLine("Future Value: {0} ", fv.ToString("N", CultureInfo.InvariantCulture));
// Future value of a sum of money invested today, m periods
// per year. r is annual interest rate
int m = 2; // Compounding per year
double fv2 = interestEngine.FutureValue(P, m);
Console.WriteLine("Future Value with {0} compoundings per year {1} ", m, fv2);
// Future value of an ordinary annuity
double A = 2.0 * Math.Pow(10.0, 6);
interestEngine.Interest = 0.08;
interestEngine.NumberOfPeriods = 15; // 15 years
Console.WriteLine("Ordinary Annuity: {0} ", interestEngine.OrdinaryAnnuity(A));
// Present Value
double Pn = 5.0 * Math.Pow(10.0, 6);
interestEngine.Interest = 0.10;
interestEngine.NumberOfPeriods = 7;
Console.WriteLine("**Present value: {0} ", interestEngine.PresentValue(Pn));
// Present Value of a series of future values
interestEngine.Interest = 0.0625;
interestEngine.NumberOfPeriods = 5;
int nPeriods2 = interestEngine.NumberOfPeriods;
double[] futureValues = new double[nPeriods2]; // For five years
for (long j = 0; j < nPeriods2 - 1; j++)
{ // The first 4 years
futureValues[j] = 100.0;
}
futureValues[nPeriods2 - 1] = 1100.0;
Console.WriteLine("**Present value, series: {0} ", interestEngine.PresentValue(futureValues));
// Present Value of an ordinary annuity
A = 100.0;
interestEngine.Interest = 0.09;
interestEngine.NumberOfPeriods = 8;
Console.WriteLine("**PV, ordinary annuity: {0}", interestEngine.PresentValueOrdinaryAnnuity(A));
// Now test periodic testing with continuous compounding
double P0 = Math.Pow(10.0, 8);
r = 0.092;
nPeriods2 = 6;
for (int mm = 1; mm <= 100000000; mm *= 12)
{
Console.WriteLine("Periodic: {0}\t {1}", mm, interestEngine.FutureValue(P0, mm));
}
Console.WriteLine("Continuous Compounding: {0}", interestEngine.FutureValueContinuous(P0));
// Bond pricing
double coupon = 50; // Cash coupon, i.e. 10.0% rate semiannual on parValue
int n = 40; // Number of payments
double annualInterest = 0.11; // Interest rate annualized
int paymentPerYear = 2; // Number of payment per year
double parValue = 1000.0;
Bond myBond = new Bond(n, annualInterest, coupon, paymentPerYear);
double bondPrice = myBond.price(parValue);
Console.WriteLine("Bond price: {0}", bondPrice);
}