What is the simplest way to permanently get rid of a unwanted file

Anetwork security application that prevents access between a private and trusted network and other untrusted networks

Write a program that begins by reading in a series of positive integers on a single line of input and then computes and prints the product of those integers. integers are accepted and multiplied until the user enters an integer less than 1. this final number is not part of the product. then, the program prints the product. if the first entered number is negative or 0, the program must print “bad input.” and terminate immediately

When a new name is registered on the internet, the process can take two hours to four hours four hours to three days two hours to two days one hour to eight hours