On 08/09/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
There are a couple (at least!) of ways to get the values into the string that you print.
The first way is to pass several values to the print command:
print "The value in", years, "is", principal
Another way is to use placeholders:
print "The value in %d years is %.2f" % (years, principal)
The placeholders (shown by the % sign) get replaced by the variables in the list, in order. "%d" means format the value as an integer. "%.2f" means format it as a floating point value with two decimal places. See http://diveintopython.org/native_data_types/formatting_strings.html for more details.
You could replace the main bit of the program with a single line, if you're feeling brave!
principal = input("Enter the initial principal: ")
apr = input("Enter the annual interest rate: ")
years = input("Enter the number of years: ")
print "The value in %d years will be %.2f" % (years, principal * (1 + apr)**years)
Hope this is useful!
Olly
below is my program. what i would like to do is to get the last line to
print the number of years that the user enters and also the principal
There are a couple (at least!) of ways to get the values into the string that you print.
The first way is to pass several values to the print command:
print "The value in", years, "is", principal
Another way is to use placeholders:
print "The value in %d years is %.2f" % (years, principal)
The placeholders (shown by the % sign) get replaced by the variables in the list, in order. "%d" means format the value as an integer. "%.2f" means format it as a floating point value with two decimal places. See http://diveintopython.org/native_data_types/formatting_strings.html for more details.
You could replace the main bit of the program with a single line, if you're feeling brave!
principal = input("Enter the initial principal: ")
apr = input("Enter the annual interest rate: ")
years = input("Enter the number of years: ")
print "The value in %d years will be %.2f" % (years, principal * (1 + apr)**years)
Hope this is useful!
Olly
# A program to compute the value of an investment
# years into the future
def main():
print "This program calculates the future value of an investment over
years"
principal = input("Enter the initial principal: ")
apr = input("Enter the annual interest rate: ")
years = input("Enter the number of years: ")
for i in range(10):
principal = principal * (1 + apr)
print "The value in years is", principal
main()
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