Donna Belle Ibarra wrote:
Hi! I need help with program exericse #6 entitled
"Futval.py" which is a program that computes the value of an investment
carried 10 years into the future.
This is the coding I have.. yet it does not seem to spit out the
correct numbers (Am I using an incorrect equation?)
Take a look at
http://en.wikipedia.org/wiki/Time_value_of_money#Present_value_of_a_future_sum
for the various formulas. I am not sure which applies in your case.
def main():
print "This program calculates the future value"
print "of a 10-year investment."
principal = input("Enter the amount invested each year: ")
apr = input("Enter the annual interest rate: ")
years = input("Enter the number of years: ")
for i in range (1, years + 1):
principal = principal * (1 + apr)**i
print "The value in", i, " years is:", principal
main()
The output is suppose to appear like this:
This program calculates the future value of a 10-year investment.
Enter the amount invested each year: 100.00
Enter the annual interst rate: 0.05
Enter the number of years: 10
The value in 1 years is 105.0
The value in 2 years is 215.25
The value in 3 years is 331.0125
The value in 4 years is 452.563125
And so on..
^Please help me!!!
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Bob Gailer
Chapel Hill NC
919-636-4239
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