Question

Using Python programming, define a function named factorial that takes a non-negative integer as a parameter and returns the factorial of that number. Solve this by using a for loop.

Answer 1

def factorial(n1):
    result = 1
    for x in range(2, n1 + 1):
        result *= x
    return result

# Testing
def main():
    n = int(input("Enter value for n: "))
    print(factorial(n))

main()