Python Program to Find Factorial of Number Using Recursion

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robaa

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2022-11-07

153

Factorial: Factorial of a number specifies a product of all integers from 1 to that number. It is defined by the symbol explanation mark (!).

For example: The factorial of 5 is denoted as 5! = 1*2*3*4*5 = 120.

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robaa

2022-11-07

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def recur_factorial(n):  
   if n == 1:  
       return n  
   else:  
       return n*recur_factorial(n-1)  
# take input from the user  
num = int(input("Enter a number: "))  
# check is the number is negative  
if num < 0:  
   print("Sorry, factorial does not exist for negative numbers")  
elif num == 0:  
   print("The factorial of 0 is 1")  
else:  
   print("The factorial of",num,"is",recur_factorial(num))

Output: