Factorial Program in python

 

Code

num = int(input("Enter a Number: ")) 

if (num == 0): 

    fact = 1 

fact = 1 

for i in range(1, num5+1): 

    fact = fact * i print("Factorial of ", num, " is ", fact)

Explaination

1. getting the input using the input function, But the input must be in the input format so for getting the input as integer type use int() function
num = int(input("Enter a Number: "))
2. Check weather the given number is zero or not if the number is zero then the factorial value will be 1, so we can assume that fact is 1
if (num == 0):
  fact = 1
3. if the entered value is not equal to one then assume one variable fact = 1 and then create a for loop which starts from one to the value we want to find the fact value, And then multiple the previous fact value with the loop value
   For example:
     lets assume the loop value is [1,2,3,4.....n] then it will multiple the fact value with i value and stores the new fact value
fact = 1
for i in range(1, num5+1):
  fact = fact * i
print("Factorial of ", num, " is ", fact)
Output:
Enter a Number: 12
Factorial of 12 is 479001600