Cannot get recursive function to get faculties for n higher 15

Question

So i wrote a code to calculate the faculty of an integer recursevely.

So far it only works for integers up to 15 because of the length it can have.
Instead i tried to use long but that did not allow higher numbers n.
Have you any idea how to overcome this?

https://code.sololearn.com/cBsIeJnpfQze/#cpp

Thanks for you help :)

Answer 1

By faculty do you mean factorial? 😛

Try an unsigned long long instead of int.
That is as high as you will get before you will have to start using strings or a different notation to treat the numbers (Like Scientific notation).

'unsigned' means there is no negative numbers. This leaves an extra byte to allow for larger positive numbers.

Answer 2

Thanks for the quick respond.
Yeah I meant factorial 😅 Will try this out. Have a nice weekend ✌

Answer 3

It worked. Thanks a lot. Very helpful 😊