Factorial

[ShivangiSingh17]

Write a code for finding the factorial of a given number.

[iulian509]

Hi, I'd like to contribute!

[ShivangiSingh17]

@iulian509 sure

[iulian509]

Done, I've made a pull request.

[criticic]

@ShivangiSingh17
i have made a PR: #85

[Joao-Moura]

I have made a PR: #152