Write a program that computes factorial for a desired number repeatedly until -1 is entered.

Expected input and output

Please enter number between 1 and 10 for factorial calculation (-1 to end) :4

factorial for 4 is 24

Please enter number between 1 and 10 for factorial calculation (-1 to end) :6

factorial for 6 is 720

Please enter number between 1 and 10 for factorial calculation (-1 to end) :8

factorial for 8 is 40320

Please enter number for factorial calculation (-1 to end) :-1