A Collection of Code Snippets in as Many Programming Languages as Possible

This project is maintained by TheRenegadeCoder

Welcome to the Factorial in Lua page! Here, you'll find the source code for this program as well as a description of how the program works.

```
--
-- Calculate the factorial
--
factorial = function(num)
product = 1
if num > 1
then
for i = 2, num
do
product = product * i
end
end
return product
end
--
-- Main executable logic
--
main = function(input)
maxInput = 20
usage = "Usage: please input a non-negative integer"
if not (input == nil or input == "")
then
inputValidation = input:gsub('[0-9]','')
if inputValidation:len() == 0
then
inputNum = tonumber(input)
if inputNum > maxInput
then
print('Input of ' .. inputNum .. ' is too large to calculate a factorial for. Max input is ' .. maxInput .. '.')
else
print(factorial(tonumber(input)))
end
else
print(usage)
end
else
print(usage)
end
end
-- Run the script
main(arg[1])
```

Factorial in Lua was written by:

- Jeremy Grifski
- Matt Wiley

If you see anything you'd like to change or update, please consider contributing.

No 'How to Implement the Solution' section available. Please consider contributing.

No 'How to Run the Solution' section available. Please consider contributing.