Factorial Number in Python

Machine Problem

Write a python program to ask the user to give a number and then the progam will computer the
factorial value of the given number.

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Program Listing

# Factorial_Number.py
# Jake Rodriguez Pomperada,MAED-IT, MIT
# www.jakerpomperada.com
# www.jakerpomperada.blogspot.com
# jakerpomperada@gmail.com
# Bacolod City, Negros Occidental Philippines


# Machine Problem
# Write a python program to ask the user to give
# a number and then the progam will computer the
# factorial value of the given number.

print()
print("\tFactorial Number in Python")
print()

num = int(input("\tGive a Number : "))

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