Question

For this lab, modify the python code below so it will continuously be asking user for inputs to calculate the interest earned until the user enters number 0 (zero) in principle. Once the user enters any number less or equal to 0 in principle, the program will end.

here is my code:

# Programming Exercise 3-14

# Local variables
p = 0.0
r = 0.0
n = 0.0
t = 0.0

loop = True

while loop:
p = float(input('\nEnter the starting principal, 0 to quit: '))
  
if p > 0:

r = float(input('Enter the annual rate: '))

total = p * (1 + float(r / 100) / n) ** (n * t)
interest = total - p
  
print('At the end of years you will have $ with interest earned', format(t, total, interest))
else:
loop = False
print ('Program exiting ...')

im not sure what is wrong in my code... please help asap

Answer 1

Answer: here is the answer for your question :

PYTHON CODE:

while True:

p = float(input('Enter the starting principal, 0 to quit: '))# input principal amount

if p > 0:

t=float(input('Enter the time duration:'))# input time from user

n=12

r = float(input('Enter the annual rate: '))# input rate

total = p * (1 + float(r / (100 * n))) ** (n * t)# calculate the toatl aount

interest = total - p# calculating the interest# interest earned

print('At the end of {} years you will have ${:.2f} as interest earned'.format( t,interest))

else:

print ('Enter principal > 0 ..Program exiting ...')

break # break is used to break the loop when condition is not meet

SNIPPET:

main.py E saved while True: p = float(input('Enter the starting principal, o to quit: '))# input principal amount BEOOWN if p > 0: t=float(input('Enter the time duration:'))# input time from user n=12 r = float(input('Enter the annual rate: '))# input rate total = p * (1 + float(r / (100 * n))) ** (n* t)# calculate the toatl aount interest = total - pi calculating the interest# interest earned print('At the end of {} years you will have ${: .2f} as interest earned'.format( t, interest)) else: print ("Enter principal > 0.. Program exiting ...') break # break is used to break the loop when condition is not meet

OUTPUT:

Enter the starting principal, o to quit: 2000 Enter the time duration: 10 Enter the annual rate: 5 At the end of 10.0 years you will have $1294.02 as interest earned Enter the starting principal, 0 to quit: 250000 Enter the time duration: Enter the annual rate: 5 At the end of 2.0 years you will have $26235.33 as interest earned Enter the starting principal, 0 to quit: 0, Enter principal > 0.. Program exiting ...

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Thanks