Computer Science
Figure out the problem with the following code that may occur when it is run.
def recur(p):
if p == 0:
print ("##")
else:
recur(p)
p = p - 1
Python Functions
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Answer
The error in the provided code is that inside the else block the value of p is modified after the recursive call. This leads to an infinite recursion because p remains the same in each recursive call, never reaching the base case (p == 0) and causing the program to enter an infinite loop.
Explanation
The corrected code is:
def recur(p):
if p == 0:
print("##")
else:
recur(p - 1)
In this corrected version, p is decremented by 1 in each recursive call, ensuring that the recursive process eventually reaches the base case where p == 0 and terminates the recursion.
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