Respuesta :

the function and loop will be

def factorial(x):

   total = 1

   if x != 1 and x != 0:

       for i in range(x,1,-1):

           total *= i

   return total

The program is an illustration of loops

Loops are program statements that are used to perform repeated operations

The program in python, where comments are used to explain each line is as follows:

#This gets input for N

N = int(input())

#This initializes factorial to 1

factorial = 1

#This opens the while loop

while N >1:

   #This calculates the factorial

   factorial*=N

   N-=1

#This prints the factorial

print(factorial)

Read more about loops at:

https://brainly.com/question/14284157