Question

i have created a program for a game of rock, paper, scissors but i must make it run more than once in some kind of loop.

i want to add a function named runGame that will control the flow of a single game. The main function will be used to determine which game mode to initiate or exit program

in Player vs. Computer, the user will be asked to enter their name and specify the number of rounds for this game.

in Computer vs Computer, the user will only be asked to specify the number of rounds for this game.

in either scenario, runGame must verify that that user attempted to intiate a game with an odd number of rounds. once a valid number of rounds has been established, create a dynamically-allocated array or vector to store the winner of each round. the size of the array/vector will correspond to the number of rounds per game.

Each round must make a call to getOutcome and is considered complete when a winner and loser have been determined. a round is repeated when a draw outcome is returned.

at the end of each round, the winner is printed to the terminal and stored in the dynamically allocated array or vector created in runGame.

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

int getCpu();
int getComputerChoice();
int getPlayerChoice();
bool isTie(int, int);
bool isPlayerWinner(int, int);

int main()
{
int userChoice;
    int playerChoice;
    int computerChoice;
cout << "welcome to rock paper scissors" << endl;
cout <<"Please select a game mode" << endl;
cout << "1. Player vs. Computer" << endl;
cout << "2. Computer vs. Computer" << endl;
cout << "3. Exit" << endl;
cin >> userChoice;

if (userChoice == 1)
{
playerChoice = getPlayerChoice();
computerChoice = getComputerChoice();

if (isTie(playerChoice, computerChoice))
{
cout << "It's a TIE!\n\n";
}

else if (!isPlayerWinner(playerChoice, computerChoice))
{
cout << "Sorry you LOSE.\n\n";
}

else if (isPlayerWinner(playerChoice, computerChoice))
{
cout << "You WIN!\n\n";
}

}

else if (userChoice == 2)
{
playerChoice = getCpu();
computerChoice = getComputerChoice();

if (isTie(playerChoice, computerChoice))
{
cout << "It's a TIE!\n\n";
}

else if (!isPlayerWinner(playerChoice, computerChoice))
{
cout << "Player 2 WIN!\n\n";
}

else if (isPlayerWinner(playerChoice, computerChoice))
{
cout << "Player 1WIN!\n\n";
}

}
else if (userChoice != 2 || userChoice != 1)
{
cout << "Invalid selection. Try again.\n\n";
}

   
return 0;
}

int getComputerChoice()
{

srand(time(NULL));
int randomCompNum = rand() % 3 + 1;

if (randomCompNum == 1)
{
cout << "The computer chose : Rock\n\n";
}

else if (randomCompNum == 2)
{
cout << "The computer chose : Paper\n\n";
}

else if (randomCompNum == 3)
{
cout << "The computer chose : Scissors\n\n";
}

return randomCompNum;
}

int getCpu()
{

srand(time(NULL));
int cpu = rand() % 6;

if (cpu == 1 || cpu == 4)
{
cout << "player 1 chose : Rock\n\n";
}

else if (cpu == 2 || cpu == 5)
{
cout << "player 1 chose : Paper\n\n";
}

else if (cpu == 3 || cpu == 6)
{
cout << "player 1 chose : Scissors\n\n";
}

return cpu;
}

int getPlayerChoice()
{
int myChoice;

cout << "\n\nRock, Paper, or Scissors?\n"
<< "1) Rock\n"
<< "2) Paper\n"
<< "3) Scissors\n"
<< "Please enter your choice : \n";
cin >> myChoice;

if (myChoice == 1)
{
cout << "\nYou chose : Rock\n";
}

else if (myChoice == 2)
{
cout << "\nYou chose : Paper\n";
}

else if (myChoice == 3)
{
cout << "\nYou chose : Scissors\n";
}

return myChoice;

while (myChoice < 1 || myChoice > 3)
{
cout << "Please pick a number between 1 & 3.\n";
cin >> myChoice;
}

}

bool isPlayerWinner(int myChoice, int randomCompNum)
{
if (((myChoice == 1) && (randomCompNum == 3)) || ((myChoice == 3) && (randomCompNum == 2)) ||
((myChoice == 2) && (randomCompNum == 1)))
{
return true;
}

else if (((randomCompNum == 3) && (myChoice == 1)) || ((randomCompNum == 3) && (myChoice == 2)) || ((randomCompNum == 2) && (myChoice == 1)))
{
return false;
}
return 0;
}

bool isTie(int myChoice, int randomCompNum)
{
if (myChoice == randomCompNum)
{
return true;
}

else if (myChoice != randomCompNum)
{
return false;
}
return 0;
}

Answer 1

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

int getCpu();
int getComputerChoice();
int getPlayerChoice();
bool isTie(int, int);
bool isPlayerWinner(int, int);
int menu();
void runGame();

int main()
{
runGame();

return 0;
}

void runGame()
{
int userChoice;
int playerChoice;
int computerChoice;
int rounds;
vector <string> winner;

do
{
winner.clear();
userChoice = menu();
if (userChoice == 1)
{
do
{
cout<<"\n Enter how many rounds to play? ";
cin>>rounds;
if(rounds % 2 == 0)
break;
else
cout<<"\n Enter a even number of rounds. \t Try again!!";
}while(1);

for(int c = 0; c < rounds; c++)
{
playerChoice = getPlayerChoice();
computerChoice = getComputerChoice();

if (isTie(playerChoice, computerChoice))
cout << "It's a TIE!\n\n";

else if (!isPlayerWinner(playerChoice, computerChoice))
{
cout << "Sorry you LOSE.\n\n";
winner.push_back("Computer WIN!");
}

else if (isPlayerWinner(playerChoice, computerChoice))
{
winner.push_back("Player WIN!");
cout << "You WIN!\n\n";
}
}
cout<<"\n ********** Final Result (Player vs. Computer) ********** ";
for(int c = 0; c < winner.size(); c++)
cout<<"\n"<<winner[c];
}

else if (userChoice == 2)
{
do
{
cout<<"\n Enter how many rounds to play? ";
cin>>rounds;
if(rounds % 2 == 0)
break;
else
cout<<"\n Enter a even number of rounds. \t Try again!!";
}while(1);

for(int c = 0; c < rounds; c++)
{
playerChoice = getCpu();
computerChoice = getComputerChoice();

if (isTie(playerChoice, computerChoice))
cout << "It's a TIE!\n\n";

else if (!isPlayerWinner(playerChoice, computerChoice))
{
cout << "Player 2 WIN!\n\n";
winner.push_back("Player 2 WIN!");
}

else if (isPlayerWinner(playerChoice, computerChoice))
{
cout << "Player 1WIN!\n\n";
winner.push_back("Player 1 WIN!");
}
}
cout<<"\n ********** Final Result (Computer vs. Computer) ********** ";
for(int c = 0; c < winner.size(); c++)
cout<<"\n"<<winner[c];
}
else if(userChoice == 3)
exit(0);
else
cout << "Invalid selection. Try again.\n\n";
}while(1);

}
int menu()
{
int userChoice;
cout << "\n\n Welcome to rock paper scissors" << endl;
cout <<"Please select a game mode" << endl;
cout << "1. Player vs. Computer" << endl;
cout << "2. Computer vs. Computer" << endl;
cout << "3. Exit" << endl;
cin >> userChoice;
return userChoice;
}
int getComputerChoice()
{
srand(time(NULL));
int randomCompNum = rand() % 3 + 1;
if (randomCompNum == 1)
{
cout << "The computer chose : Rock\n\n";
}

else if (randomCompNum == 2)
{
cout << "The computer chose : Paper\n\n";
}

else if (randomCompNum == 3)
{
cout << "The computer chose : Scissors\n\n";
}

return randomCompNum;
}

int getCpu()
{
srand(time(NULL));
int cpu = rand() % 6;

if (cpu == 1 || cpu == 4)
{
cout << "player 1 chose : Rock\n\n";
}

else if (cpu == 2 || cpu == 5)
{
cout << "player 1 chose : Paper\n\n";
}

else if (cpu == 3 || cpu == 6)
{
cout << "player 1 chose : Scissors\n\n";
}
return cpu;
}

int getPlayerChoice()
{
int myChoice;
cout<< "\n\nRock, Paper, or Scissors?\n"
<< "1) Rock\n"
<< "2) Paper\n"
<< "3) Scissors\n"
<< "Please enter your choice : \n";
cin >> myChoice;

if (myChoice == 1)
{
cout << "\nYou chose : Rock\n";
}
else if (myChoice == 2)
{
cout << "\nYou chose : Paper\n";
}
else if (myChoice == 3)
{
cout << "\nYou chose : Scissors\n";
}

return myChoice;

while (myChoice < 1 || myChoice > 3)
{
cout << "Please pick a number between 1 & 3.\n";
cin >> myChoice;
}
}

bool isPlayerWinner(int myChoice, int randomCompNum)
{
if (((myChoice == 1) && (randomCompNum == 3)) || ((myChoice == 3) && (randomCompNum == 2)) ||
((myChoice == 2) && (randomCompNum == 1)))
{
return true;
}

else if (((randomCompNum == 3) && (myChoice == 1)) || ((randomCompNum == 3) && (myChoice == 2)) || ((randomCompNum == 2) && (myChoice == 1)))
{
return false;
}
return 0;
}

bool isTie(int myChoice, int randomCompNum)
{
if (myChoice == randomCompNum)
{
return true;
}

else if (myChoice != randomCompNum)
{
return false;
}
return 0;
}

Sample Output:

Welcome to rock paper scissors
Please select a game mode
1. Player vs. Computer
2. Computer vs. Computer
3. Exit
5
Invalid selection. Try again.

Welcome to rock paper scissors
Please select a game mode
1. Player vs. Computer
2. Computer vs. Computer
3. Exit
1

Enter how many rounds to play? 3

Enter a even number of rounds. Try again!!
Enter how many rounds to play? 4

Rock, Paper, or Scissors?
1) Rock
2) Paper
3) Scissors
Please enter your choice :
1

You chose : Rock
The computer chose : Rock

It's a TIE!

Rock, Paper, or Scissors?
1) Rock
2) Paper
3) Scissors
Please enter your choice :
1

You chose : Rock
The computer chose : Paper

Sorry you LOSE.

Rock, Paper, or Scissors?
1) Rock
2) Paper
3) Scissors
Please enter your choice :
1

You chose : Rock
The computer chose : Paper

Sorry you LOSE.

Rock, Paper, or Scissors?
1) Rock
2) Paper
3) Scissors
Please enter your choice :
1

You chose : Rock
The computer chose : Paper

Sorry you LOSE.

********** Final Result (Player vs. Computer) **********
Computer WIN!
Computer WIN!
Computer WIN!

Welcome to rock paper scissors
Please select a game mode
1. Player vs. Computer
2. Computer vs. Computer
3. Exit
2

Enter how many rounds to play? 5

Enter a even number of rounds. Try again!!
Enter how many rounds to play? 6
player 1 chose : Paper

The computer chose : Scissors

Player 2 WIN!

player 1 chose : Paper

The computer chose : Scissors

Player 2 WIN!

player 1 chose : Paper

The computer chose : Scissors

Player 2 WIN!

player 1 chose : Paper

The computer chose : Scissors

Player 2 WIN!

player 1 chose : Paper

The computer chose : Scissors

Player 2 WIN!

player 1 chose : Paper

The computer chose : Scissors

Player 2 WIN!

********** Final Result (Computer vs. Computer) **********
Player 2 WIN!
Player 2 WIN!
Player 2 WIN!
Player 2 WIN!
Player 2 WIN!
Player 2 WIN!

Welcome to rock paper scissors
Please select a game mode
1. Player vs. Computer
2. Computer vs. Computer
3. Exit
3