Rock, paper, scissors

Extra Credit Points 8 - Added to your final score

Due on 9/30/98

Write a suite of programs that run in parallel and interact to play the ``paper, Scissors, Rock'' game. In this game, two players secretly choose either paper, scissors or rock. They then reveal their choice. A referee decides who wins as follows:

Paper beats rock (by covering it)
Rock beats scissors (by blunting it)
Scissors beat paper (by cutting it)
Matching choics draw.

The winning player gets a point. In a draw, no points are awarded. Your program should simulate such a game, allowing a user to choose how many iterations are performed, observe the game, and see the final score. Here is an example of the session.

play 2         ... play 2 games

Paper, Scissor, rock: 2 iterations

Player 1: ready
Player 2: ready

Go players [1]
	Player 1: Scissors
	Player 2: Rock

Player 2 wins

Go players [2]
	Player 1: Paper
	Player 2: Paper

Players draw

Final Score:

	Player 1: 0
	Player 2: 1

Player 2 wins the tournament.

You should write three programs, which operate as follows:

One program is the main program, which fork/execs one referee process and two player processes. It then waits until all three terminate. It should check that the command line parameter specifies the number of games is legal and pass it to the referee process as a parameter to exec().
One program is a referee program, which playes the role of a server. This program should prepare a socket and then listen to both players to send the string ``READY'', which means that they're ready to make a choice. It should then tell each player to make a choice by sending them both the string ``GO''. Their responses are then read, and their scores are calculated and updated. This process should be repeated until all of the turns have been taken, at which point the referee should send both players the string ``STOP'', which causes them to terminate.
One program is a aplayer program, which playes the role of the client. This program is executed twice by the main program, and should start by connecting to the referee's socket. It should then send the ``READY'' message. When it receives the ``GO'' message back from the referee, it should make a choice anbd send it as a stringto the referee. When it receives the string ``STOP'', it should kill itself.

These programs will share some functions. To do a good job, create a makefile that separately compiles these common functions and links them into the executables taht use them. Please don't avoid sending the strings by encoding them as one byte numbers - that is part of the problem.