I need help!
The errors I got
error: INTEREST_PER_YEAR not declared
error: PAYMENTS_PER_YEAR not declared
error: intPerPayment not declared

Here is the code in Visual Web Devoloper 2005 Express

'Create variables to hold the values entered by the user
Dim P As Double = loanAmount.Text
Dim r As Double = rate.Text / 100
Dim t As Double = mortgageLength.Text

Dim ratePerPeriod As Double
ratePerPeriod = r / INTEREST_PER_YEAR

Dim payPeriods As Integer
payPeriods = t * PAYMENTS_PER_YEAR

Dim annualRate As Double
annualRate = Math.Exp(INTERESt_CALCS_PER_YEAR * Math.Log(1 + ratePerPeriod)) - 1

Dim intPerPayment As Double
intPerPayment = (Math.Exp(Math.Log(annualRate + 1) / payPeriods) - 1) * payPeriods

'Now compute the total cost of the loan
Dim intPerMonth As Double = intPerPayment / PAYMENTS_PER_YEAR

Dim costPerMonth As Double
costPerMonth = P * intPerMonth / (1 - Math.Pow(interPerMonth + 1, -payPeriods))

Q

Where is the declaration of these variables? You defined P, r, t but there is no variable INTEREST_PER_YEAR, PAYMENTS_PER_YEAR (you may need to declare them as constant) in the code you posted. Can you post the full function instead?

__________________
Thanks in advance.

Regards,

Senthil Kumar M.