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Cover image for Rock, Paper, Scissors, Lizard, Spock
Scott Gordon
Scott Gordon

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Rock, Paper, Scissors, Lizard, Spock

GitHub Repo

Console Output

/*
    This program emulates the version of rock, paper, scissors popularized 
    by the tv series "Big Bang Theory". This variety utilizes the typical 
    rock, paper and scissors paradigm while adding lizard and spock to the
    equation. (scissors > paper > rock > lizard > spock > scissors > lizard >
    paper > spock > rock > scissors)
*/
#include <iostream>
#include <stdlib.h>

int main(int argc, char const *argv[])
{
    srand(time(NULL));

    int user = -1;

    std::cout << "=================================\n";
    std::cout << "Rock, Paper, Scissors Lizard Spock!\n";
    std::cout << "=================================\n";

    while (user != 0)

    {
        std::cout << "1)πŸ‘Š 2)βœ‹ 3)✌️ 4)🦎 5)πŸ–– 0)πŸ›‘\n";
        std::cout << "\n";
        std::cout << "Shoot!\n";
        std::cin >> user;
        std::cout << "\n";
        int computer = rand() % 5 + 1;

        if (user == computer)
        {
            std::cout << "It's a tie, try again please.\n";
            std::cout << "\n";
        }
        else if ((user == 1) && (computer == 2))
        {
            std::cout << "You: πŸ‘Š Computer: βœ‹\n";
            std::cout << "Computer wins, Paper covers Rock.\n";
            std::cout << "\n";
        }
        else if ((user == 1) && (computer == 3))
        {
            std::cout << "You: πŸ‘Š Computer: ✌️\n";
            std::cout << "You win, Rock crushes Scissors.\n";
            std::cout << "\n";
        }
        else if ((user == 1) && (computer == 4))
        {
            std::cout << "You: πŸ‘Š Computer: 🦎\n";
            std::cout << "You win, Rock crushes Lizard.\n";
            std::cout << "\n";
        }
        else if ((user == 1) && (computer == 5))
        {
            std::cout << "You: πŸ‘Š Computer: οΈπŸ––\n";
            std::cout << "Computer wins, Spock vaporizes Rock.\n";
            std::cout << "\n";
        }
        else if ((user == 2) && (computer == 1))
        {
            std::cout << "You: βœ‹ Computer: οΈπŸ‘Š\n";
            std::cout << "You win, Paper covers Rock.\n";
            std::cout << "\n";
        }
        else if ((user == 2) && (computer == 3))
        {
            std::cout << "You: βœ‹ Computer: ️✌️\n";
            std::cout << "Computer wins, Scissors cuts Paper.\n";
            std::cout << "\n";
        }
        else if ((user == 2) && (computer == 4))
        {
            std::cout << "You: βœ‹ Computer: ️🦎\n";
            std::cout << "You lose, Lizard eats Paper.\n";
            std::cout << "\n";
        }
        else if ((user == 2) && (computer == 5))
        {
            std::cout << "You: βœ‹ Computer: οΈπŸ––\n";
            std::cout << "You win, Paper disproves Spock.\n";
            std::cout << "\n";
        }
        else if ((user == 3) && (computer == 1))
        {
            std::cout << "You: ✌️ Computer: οΈπŸ‘Š\n";
            std::cout << "Computer wins, Rock crushes Scissors.\n";
            std::cout << "\n";
        }
        else if ((user == 3) && (computer == 2))
        {
            std::cout << "You: ✌️ Computer: οΈβœ‹\n";
            std::cout << "You win, Scissors cuts Paper.\n";
            std::cout << "\n";
        }
        else if ((user == 3) && (computer == 4))
        {
            std::cout << "You: ✌️ Computer: ️🦎\n";
            std::cout << "You win, Scissors decapitate Lizard.\n";
            std::cout << "\n";
        }
        else if ((user == 3) && (computer == 5))
        {
            std::cout << "You: ✌️ Computer: οΈπŸ––\n";
            std::cout << "You lose, Spock smashes Scissors.\n";
            std::cout << "\n";
        }
        else if ((user == 4) && (computer == 1))
        {
            std::cout << "You: 🦎 Computer: οΈπŸ‘Š\n";
            std::cout << "You lose, Rock crushes Lizard.\n";
            std::cout << "\n";
        }
        else if ((user == 4) && (computer == 2))
        {
            std::cout << "You: 🦎 Computer: οΈβœ‹\n";
            std::cout << "You win, Lizard eats paper.\n";
            std::cout << "\n";
        }
        else if ((user == 4) && (computer == 3))
        {
            std::cout << "You: 🦎 Computer: ️✌️\n";
            std::cout << "You lose, Scissors decapitate Lizard.\n";
            std::cout << "\n";
        }
        else if ((user == 4) && (computer == 5))
        {
            std::cout << "You: 🦎 Computer: οΈπŸ––\n";
            std::cout << "You win, Lizard poisons Spock.\n";
            std::cout << "\n";
        }
        else if ((user == 5) && (computer == 1))
        {
            std::cout << "You: πŸ–– Computer: οΈπŸ‘Š\n";
            std::cout << "You win, Spock vaporizes Rock.\n";
            std::cout << "\n";
        }
        else if ((user == 5) && (computer == 2))
        {
            std::cout << "You: πŸ–– Computer: οΈβœ‹\n";
            std::cout << "Computer wins, Paper disproves Spock.\n";
            std::cout << "\n";
        }
        else if ((user == 5) && (computer == 3))
        {
            std::cout << "You: πŸ–– Computer: ️✌️\n";
            std::cout << "You win, Spock smashes scissors.\n";
            std::cout << "\n";
        }
        else if ((user == 5) && (computer == 4))
        {
            std::cout << "You: πŸ–– Computer: ️🦎\n";
            std::cout << "You lose, Lizard poisons Spock.\n";
            std::cout << "\n";
        }
        else
        {
            std::cout << "Please enter a valid number.\n";
            std::cout << "\n";
        }
    }

    return 0;
}

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Top comments (4)

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Sloan, the sloth mascot
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sagordondev profile image
Scott Gordon

Thank you that cleaned up quite nicely! If you don't mind I will use your suggestions and give you credit of course. With a program this small I know that this is a non issue but since we're tuning things up how would you improve the time complexity?

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lexlohr profile image
Alex Lohr

I don't want to sound harsh, but that's some spaghetti code. There could be a mathematical way to judge the outcome or at least a vector of vectors of booleans to select the outcome from.

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sagordondev profile image
Scott Gordon • Edited

Yeah no worries haha, I have a whiteboard coming up in C++ and I haven't done anything with it for 3 years so I am just refreshing with a couple of tiny projects to keep my interest. But yes of course I am certain there are probably a thousand better ways to do it =)