Write a function, int factorial(int n), which returns n! (the factorial of n, i. e. 1 ×2 ×3 ××n.) (b) Using int factorial(int n) above, write a program to compute

1. before plugging in a new device to a computer you should unplug all other devices turn off the computer turn on the computer 2. many of the maintenance tools for a computer can be found in the control panel under administrative tools display personalization