Suppose 8 people want to communicate with each other using public key encryption. The communication between any pair of them is visible to all of them but no other person other than the pair should be able to decode their communication. How many public and private keys are required for this group?

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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

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