Question

Exercise: Write a program named factorial.py that contains the following two functions:

def while_factorial(num)

def for_factorial(num)

These should calculate the factorial of a given number represented by the argument num using a while loop and a for loop respectively.

Answer 1

#function for calculating factorial using while loop
def while_factorial(num):
   f=1
   c=1
   while(c<=num):
       f=f*c
       c=c+1
  
   print("while_factorial: factorial of {} is {}".format(num,f))

#function for calculating factorial using while loop
def for_factorial(num):
   f=1
   for c in range(1,num+1,1):
       f=f*c
   print("for_factorial: factorial of {} is {}".format(num,f))

num=int(input("Enter number for factorial :"))   #reading number from user
#displaying factorial value using functions
while_factorial(num)
for_factorial(num)

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