Add an if branch to complete double_pennies()'s base case. Sample output with inputs: 1 10 Number of pennies after 10 days: 1024 Note: If the submitted code has an infinite loop, the system will stop running the code after a few seconds, and report "Program end never reached." The system doesn't print the test case that caused the reported message.

Explanation:

A recursive function double_pennies is created which takes two inputs, the amount of pennies and the number of days.

The base case is

if days == 0:

       return pennies

otherwise function keeps on calling itself until

total = double_pennies((pennies * 2), (days - 1));

Python Code:

def double_pennies(pennies, days):

   total = 0

   if days == 0:

       return pennies

   else:

       total = double_pennies((pennies * 2), (days - 1));

   return total

Driver Code:

pennies = 1

days = 10

print("no. of pennies after", days, "days: ", end="")

print(double_pennies(pennies, days))

Output:

no. of pennies after 10 days: 1024

no. of pennies after 20 days: 1048576

answer///radio frequency interference (rfi);