Adding Rock Paper Scissors program

CPP/miscelanious/rps/rockpaperscissors.cpp

@@ -0,0 +1,67 @@
+#include <iostream>
+#include <vector>
+
+std::vector <std::string> WIN_MESSAGE = {"It's a draw!", "Player One Won!", "Player Two Won!"};
+
+void print(const std::string s)
+{
+  std::cout << s << std::endl;
+}
+
+int playerChoose(const bool playerNumber)
+{
+  int playerChoice;
+  if (playerNumber == 0) print("Player one choose: \n[1] Rock \n[2] Paper \n[3] Scissors");
+  else print("Player one choose: \n[1] Rock \n[2] Paper \n[3] Scissors");
+  std::cin >> playerChoice;
+  return playerChoice;
+}
+
+void playerOneWins()
+{
+  print("Player One Wins!");
+}
+
+void playerTwoWins()
+{
+  print("Player Two Wins!");
+}
+
+void draw()
+{
+  print("It's a draw!");
+}
+
+int whoWon(const int playerOneChoice, const int playerTwoChoice)
+{
+  if( (playerOneChoice == 1 && playerTwoChoice == 3) || (playerOneChoice == 2 && playerTwoChoice == 1) || (playerOneChoice == 3 && playerTwoChoice == 2)) return 1;
+  else if(playerOneChoice == playerTwoChoice) return 0;
+  else return 2;
+}
+
+bool tests()
+{
+  if(whoWon(1, 1) != 0) return 0;
+  if(whoWon(1, 2) != 2) return 0;
+  if(whoWon(1, 3) != 1) return 0;
+  if(whoWon(2, 1) != 1) return 0;
+  if(whoWon(2, 2) != 0) return 0;
+  if(whoWon(2, 3) != 2) return 0;
+  if(whoWon(3, 1) != 2) return 0;
+  if(whoWon(3, 2) != 1) return 0;
+  if(whoWon(3, 3) != 0) return 0;
+  return 1;
+}
+
+int main()
+{
+  if(!tests())
+  {
+    print("There is an error in program logic!");
+    return -1;
+  }
+  int playerOneChoice = playerChoose(0);
+  int playerTwoChoice = playerChoose(1);
+  std::cout << WIN_MESSAGE[whoWon(playerOneChoice, playerTwoChoice)] << std::endl;
+  return 0;
+}