CODE :We want to develop a program to determine the future value of an investment.
def main () :
print ("This program calculates the future value")
print ("of a 10-year investment.")
principal = eval (input ("Enter the initial principal: $") )
apr = eval (input ("Enter the annual interest rate: ") )
for i in range (10) :
principal = principal * (1 + apr)
print ("The value in 10 years is: $", principal)
main ()
save above program as futval.py
SCREENSHOT
Modify the chaos program so that the number of values to print is determined by the user. You will have to add a line near the top of the program to get another value from the user:
n = eval(input("How many numbers should I print? ") ) Then you will need to change the loop to use n instead of a specific number.
def main():
print("This program illustrates a chaotic function")
n = eval(input("How many numbers should I Print ?"))
x = eval(input("Enter a number between 0 and 1: "))
for i in range(n):
x = 3.9 * x * (1 - x)
print(x)
main()
Note : Save above file as chaos_v2.py
def main():
print("This program illustrates a chaotic function")
x = eval(input("Enter a number between 0 and 1: "))
for i in range(20):
x = 3.9 * x * (1 - x)
print(x)
main()
Note : Save above code as chaos_v3.py
Modify the chaos program using 2.0 in place of 3.9 as the multiplier in the logistic function.
Your modified line of code should look like this: X = 2. 0 * X * (1 - X)
def main():
print("This program illustrates a chaotic function")
x = eval(input("Enter a number between 0 and 1: "))
for i in range(10):
x = 2.0 * x * (1 - x)
print(x)
main()
Note : Save above code as chaos_v1.py
def main():
print("This program illustrates a chaotic function")
x = eval(input("Enter a number between 0 and 1: "))
for i in range(10):
x = 3.9 * x * (1 - x)
print(x)
main()
Note : Save above code as chaos.py
def main():
x=10
y=20
sum = x + y
print("X's Value=",x)
print("Y's Value=",y)
print("Summation of X + Y =",sum)
main()
Note : Save above code as prog2.py
def main():
print("Hello World")
main()
Note : Save above code as prog1.py
