// G. Hagopian--PPP4 exercise 10

/*
10. Write a program that plays the game “Rock, Paper, Scissors.” If you are
not familiar with the game do some research (e.g., on the web using Google).
Research is a common task for programmers. Use a switch-statement to solve
this exercise. Also, the machine should give random answers (i.e., select
the next rock, paper, or scissors randomly). Real randomness is too hard
to provide just now, so just build a vector with a sequence of values to
be used as “the next value.” If you build the vector into the program, it
will always play the same game, so maybe you should let the user enter
some values. Try variations to make it less easy for the user to guess
which move the machine will make next.
*/

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <vector>
using namespace std;

int main() {
	srand(unsigned(time(0)));
	vector<int> rps(3);
	int player1{}, player2{};
	for (int i = 0; i < 1000000; ++i) {
		player1 = rand() % 3;
		player2 = rand() % 3;
		switch (player1) {
		case 0: // rock
			rps[0] += (player2 == 2);
			rps[1] += (player2 == 1);
			break;
		case 1: //paper
			rps[1] += (player2 == 0);
			rps[2] += (player2 == 2);
			break;
		case 2: //scissors
			rps[0] += (player2 == 0);
			rps[2] += (player2 == 1);
			break;
		}
	}
	cout << "rock won " << rps[0] << " times,\n"
		<< "paper won " << rps[1] << " times, and \n"
		<< "scissors won " << rps[2] << " times.";
}