![Rock, Paper, Scissors Game in C++ [C++ Game]](https://cdn.mycplus.com/mycplus/wp-content/uploads/2021/06/Rock-Paper-Scissor-Game-C-1280x640.png)
This is a simple C++ program to demonstrate rock, paper, scissors game. In this game, players have to choose one of the three options to beat the opponent or the computer itself.
The following C++ code prints a simple menu showing three options to the user and then user can enter one of the options.
Below is the game menu which shows list of options to choose.
The C++ code generates a random choice by creating a character to indicate that option. Options are: r is for ‘rock’, p is for ‘paper’, and s is for ‘scissors’.
Once we have both the choices i.e. user’s choice and computer’s choice then our program compares both the choices to see who the winner is.
The C++ function, that compares both the choices, works based on the following criteria.
- Rock beats scissors as it smashes Scissors.
- Scissors beats paper as it cuts Papers
- Paper beats rocks as it wraps the Rock.
- Show a tie if both choices match.
Rock, Paper, Scissors Game C++ Source Code
Here is the full C++ code for this game. Feel free to copy this code into your course work/assignments and modify as necessary. In this code, computer’s choice is selected based on random number generator. We also use modulus operator and time seed to generate a different random numbers every time.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | #include <iostream> // Constant variables const char ROCK = 'r'; const char PAPER = 'p'; const char SCISSORS = 's'; using namespace std; char getComputerOption() { srand(time(0)); // Random number int num = rand() % 3 + 1; if(num==1) return 'r'; if(num==2) return 'p'; if(num==3) return 's'; } char getUserOption() { char c; cout << "Rock, Paper and Scissors Game!" << endl; cout << "Choose one of the following options" << endl; cout << "-----------------------------------" << endl; cout << "(r) for rock " << endl << "(p) for paper" << endl << "(s) for scissors " << endl; cin >> c; while (c!='r' && c!='p' && c!='s' ) { cout << "Please enter one of the following options only. " << endl; cout << "(r) for rock " << endl << "(p) for paper" << endl << "(s) for scissors " << endl; cin >> c; } return c; } void showSelectedOption(char option) { if (option == 'r') cout << "Rock" << endl; if (option == 'p') cout << "Paper" << endl; if (option == 's') cout << "Scissors" << endl; } void chooseWinner(char uChoice, char cChoice) { if (uChoice == ROCK && cChoice == PAPER) { cout << "Computer Wins! Paper wraps Rock."<< endl; } else if (uChoice == PAPER && cChoice == SCISSORS) { cout << "Computer Wins! Scissors cut Paper."<< endl; } else if (uChoice == SCISSORS && cChoice == ROCK) { cout << "Computer Wins! Rock smashes Scissors."<< endl; } else if (uChoice == ROCK && cChoice == SCISSORS) { cout << "You Win! Paper wraps Rock."<< endl; } else if (uChoice == PAPER && cChoice == ROCK) { cout << "You Win! Paper wraps Rock."<< endl; } else if (uChoice == SCISSORS && cChoice == PAPER) { cout << "You Win! Scissors cut Paper."<< endl; } else{ cout << "Tie. Play again win the Game." << endl; } } int main() { //User's choice char uChoice; //Compter's choice char cChoice; uChoice = getUserOption(); cout << "Your choice is: "<< endl; showSelectedOption(uChoice); cout << "Computer's choice is: "<< endl; cChoice = getComputerOption(); showSelectedOption(cChoice); chooseWinner(uChoice, cChoice); return 0; } |
