Factorial of a Number

The factorial of a positive integer n is equal to 1*2*3*...n.

➣ Source Code

 
		   
# Python program to find the factorial of a number provided by the user.

# change the value for a different result
num = 7


factorial = 1

# check if the number is negative, positive or zero
if num < 0:
   print("Sorry, factorial does not exist for negative numbers")
elif num == 0:
   print("The factorial of 0 is 1")
else:
   for i in range(1,num + 1):
       factorial = factorial*i
   print("The factorial of",num,"is",factorial)
	
		 
		

➣ Output

 
The factorial of 7 is 5040