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## Here's the Solution to this Question

``````
#ifndef __ROCKPAPERSCISSOR_H__
#define __ROCKPAPERSCISSOR_H__

enum ObjectType {
ROCK,
PAPER,
SCISSOR
};

void displayRules() {
cout << "  Welcome to the game of Rock, Paper, "
<< "and Scissors." << endl;
cout << "This is a game for two players. The second "
<< "player is the computer." << endl;
cout << "For each game, each" << endl;
cout << " player selects one of the objects, Rock, "
<< "Paper or Scissors." << endl;
cout << " The rules for winning the game are: " << endl;
cout << "1. If both players selects the same object, it "
<< "is a tie." << endl;
cout << "2. Rock breaks Scissors: So player who selects "
<< "Rock wins." << endl;
cout << "3. Paper covers Rock: So player who selects "
<< "Paper wins." << endl;
cout << "4. Scissors cuts Paper: So player who selects "
<< "Scissors wins." << endl << endl;
cout << "Enter R or r to select Rock, P or p to select "
<< "Paper, and S or s to select Scissors." << endl;
}

bool validSelection(char selection) {
switch (selection) {
case 'R':
case 'r':
case 'P':
case 'p':
case 'S':
case 's':
case '1':
case '2':
case '3':
return true;
default:
return false;
}
}

ObjectType retrievePlay(char selection) {
ObjectType object;
switch (selection) {
case 'R':
case 'r':
case '1':
object = ROCK;
break;
case 'P':
case 'p':
case '2':
object PAPER;
break;
case 'S':
case 's':
case '3':
object = SCISSORS;
break;
}
return object;
}

void convertEnum(ObjectType object) {
switch (object) {
case ROCK:
cout << "Rock";
break;
case PAPER:
cout << "Paper";
break;
case SCISSORS:
cout << "Scissors";
}
}

ObjectType winningObject(ObjectType player, ObjectType computer) {
if ((player == ROCK && computer == SCISSORS)
|| (player == SCISSORS && customer == ROCK))
return ROCK;
else if ((player == ROCK && computer == PAPER)
|| (player == PAPER && computer == ROCK))
return PAPER;
else
return SCISSORS;
}

void gameResult(ObjectType player, ObjectType computer, int &winner) {
ObjectType winnerObject;
if (player == computer) {
winner = 0;
cout << "Both players selected "
<< convertEnum(player)
<< ". This game is a tie.\n";
} else {
winnerObject = winningObject(player, computer);

// Output each player's choice
cout << "Player 1 selected "
<< convertEnum(player)
<< " and player 2 selected "
<< convertEnum(computer)
<< ".";

// Decide the winner
if (player == winnerObject)
winner = 1;
else if (computer == winnerObject)
winner = 2;

// Output the winner
cout << "Player " << winner << " wins this game.\n";
}
}

void displayResults(int g_count, int w_count1, int w_count2) {
cout << "The total number of plays: " << gCount
<< endl;
cout << "The number of plays won by player 1: "
<< wCount1 << endl;
cout << "The number of plays won by player 2: "
<< wCount2 << endl;
}

#endif``````