#include <iostream>
#include <cstdlib>

using namespace std;

int main()
    {
    char playAgain = 'Y';
    int totalSticks = 23;
    int humanStickChoice = 1;

        cout<<"****************************   RULES: Remove 1, 2, or 3 sticks per turn.\n";
        cout<<"*Welcome to our Game of 23!*   The player who removes the very last stick\n";
        cout<<"****************************   loses. Good luck!\n";
        cout<<endl;

        while (totalSticks > 0 && playAgain == 'Y' || playAgain == 'y')
        {
        cout<<"There are "<<totalSticks<<" sticks left. How many sticks would you like to remove?:\n";
        cin>>humanStickChoice;
        cout<<endl;

        if(totalSticks >= 3){
            if(humanStickChoice != 1 && humanStickChoice != 2 && humanStickChoice != 3){
                while(humanStickChoice != 1 && humanStickChoice != 2 && humanStickChoice != 3){
                    cout<<"Invalid choice; you can remove 1, 2, or 3 sticks. Choose again:\n";
                  cin>>humanStickChoice;
                }
            }
          totalSticks=totalSticks-humanStickChoice;
          cout<<"Player removes "<<humanStickChoice<<" sticks.\n";
        }
        else if(totalSticks == 3){
            if(humanStickChoice != 1 && humanStickChoice != 2){
                while(humanStickChoice != 1 && humanStickChoice != 2){
                    cout<<"Invalid choice; you can remove 1 or 2 sticks. Choose again:\n";
                  cin>>humanStickChoice;
                }
            }
        }
        else if(totalSticks == 2){
            if(humanStickChoice != 1){
                while(humanStickChoice != 1){
                    cout<<"Invalid choice; as there are 2 sticks remaining, you can remove only one.\n";
                  cin>>humanStickChoice;
                }
            }
                totalSticks=totalSticks-humanStickChoice;
                cout<<"Player removes "<<humanStickChoice<<" sticks.\n";
        }
        else if(totalSticks == 1){
            if(humanStickChoice != 1){
                while(humanStickChoice != 1){
                    cout<<"Invalid choice; as there is 1 stick remaining, you can remove only one.\n";
                  cin>>humanStickChoice;
                }
            }
          int humanStickChoice = 1;
          cout<<"Player removes "<<humanStickChoice<<" stick.\n";
          totalSticks=totalSticks-humanStickChoice;
          cout<<"*************************************************\n";
          cout<<"Player removed the last stick! Computer wins!";
            if(totalSticks == 0){
            cout<<endl<<"Would you like to play again? If so, input Y and hit return.\n";
            cin>>playAgain;
            totalSticks = 23;
            }
        }
        //This block above is where the logic error is occurring; instead of going back to the
        //beginning of the "main" while loop and starting over with the human player starting,
        //the totalSticks count is merely replenished and the program continues to go on with the
        //computer making the first move; the human is supposed to make the first move every game.
        if(totalSticks > 4){
          int computerStickChoice = (4-humanStickChoice);
          cout<<"Computer removes "<<computerStickChoice<<" sticks.\n";
          totalSticks=totalSticks-computerStickChoice;
        }
        else if(totalSticks == 4){
          int computerStickChoice = 3;
          cout<<"Computer removes "<<computerStickChoice<<" sticks.\n";
          totalSticks=totalSticks-computerStickChoice;
        }
        else if(totalSticks == 3){
          int computerStickChoice = 2;
          cout<<"Computer removes "<<computerStickChoice<<" sticks.\n";
          totalSticks=totalSticks-computerStickChoice;
        }
        else if(totalSticks == 2){
          int computerStickChoice = 1;
          cout<<"Computer removes "<<computerStickChoice<<" stick.\n";
          totalSticks=totalSticks-computerStickChoice;
        }
        else if(totalSticks == 1){
          int computerStickChoice = 1;
          cout<<"Computer removes "<<computerStickChoice<<" stick.\n";
          totalSticks=totalSticks-computerStickChoice;
          cout<<"*************************************************\n";
          cout<<"Computer removed the last stick! You win!";
            if(totalSticks == 0){
            cout<<endl<<"Would you like to play again? If so, input Y and hit return.\n";
            cin>>playAgain;
            totalSticks = 23;
            }
        }
    }




    return 0;
}