Factorial of a Number

Programs with input · Intermediate · about 6 min

Read a whole number n and print its factorial, the product 1 * 2 * 3 * ... * n, as 5! = 120. The factorial of 0 is 1. For a negative number, print No factorial for negative numbers.

The prompts inside input() are not checked, only what you print.

Example

You type:

The program prints:

5! = 120

n = int(input("Number: "))

# Print n! or the message for negative numbers

Typed input, one line for each input()

The solution opens after your first Check.