Python Program to Find Factorial of Number Using Recursion
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.
See this example:
- 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:
