大学C++课程作业：Rock Paper Scissors程序实现技术问询

Hey there! Let's walk through building this Rock Paper Scissors program exactly to your C++ assignment specs. I'll break it down with code and explanations so you can follow along easily.

Step 1: Define the Player Struct #

First up, we need to create the required struct with all the specified member variables. Here's how to do it properly, with comments explaining each part:

#include <iostream>
#include <cstring>
#include <cstdlib>
#include <ctime>
#include <cctype>

// Exact struct as required by your assignment
struct Player {
    char name[41];          // Holds up to 40 characters + null terminator
    int points;             // Tracks player's score
    bool master;            // Flags if player has achieved "master" status
    char weapon[8];         // Stores "rock", "paper", or "scissors" (all fit with room for null terminator)
};

Step 2: Implement the checkMastery Function #

The assignment specifies a void function that takes a Player pointer. I'll assume the logic here is to set master to true when the player reaches a certain point threshold (common in such assignments—adjust the threshold if your prof gave a specific number):

// Checks if player qualifies as a "master" based on points
void checkMastery(Player* player) {
    // Example rule: Master status unlocks at 10 points
    // Replace 10 with your assignment's required threshold
    player->master = (player->points >= 10);
}

Step 3: Full Game Implementation #

To make this a working program, we'll add helper functions for input validation, computer choice generation, and winner determination, plus a main function to run the game:

Helper Function: Get Valid Player Weapon #

Ensures the player only enters one of the three allowed choices:

void getPlayerWeapon(Player* player) {
    std::cout << "Enter your choice (rock, paper, scissors): ";
    std::cin >> player->weapon;
    
    // Validate input to match required weapons
    while (strcmp(player->weapon, "rock") != 0 && 
           strcmp(player->weapon, "paper") != 0 && 
           strcmp(player->weapon, "scissors") != 0) {
        std::cout << "Invalid choice! Please enter rock, paper, or scissors: ";
        std::cin >> player->weapon;
    }
}

Helper Function: Generate Computer's Random Weapon #

Uses rand() to pick a random choice, with seed initialization to ensure different results each run:

void getComputerWeapon(char computerWeapon[]) {
    // Initialize random seed only once
    static bool seedSet = false;
    if (!seedSet) {
        srand(time(0));
        seedSet = true;
    }
    
    int randChoice = rand() % 3;
    switch(randChoice) {
        case 0: strcpy(computerWeapon, "rock"); break;
        case 1: strcpy(computerWeapon, "paper"); break;
        case 2: strcpy(computerWeapon, "scissors"); break;
    }
}

Helper Function: Determine Winner & Update Scores #

Compares the player's and computer's choices, updates points, and calls checkMastery to update the player's status:

void determineWinner(Player* player, const char* computerWeapon) {
    std::cout << "\nYou chose: " << player->weapon << "\nComputer chose: " << computerWeapon << "\n";
    
    // Check for tie
    if (strcmp(player->weapon, computerWeapon) == 0) {
        std::cout << "It's a tie!\n";
    }
    // Check player win conditions
    else if ((strcmp(player->weapon, "rock") == 0 && strcmp(computerWeapon, "scissors") == 0) ||
             (strcmp(player->weapon, "paper") == 0 && strcmp(computerWeapon, "rock") == 0) ||
             (strcmp(player->weapon, "scissors") == 0 && strcmp(computerWeapon, "paper") == 0)) {
        std::cout << "You win this round!\n";
        player->points++;
    }
    // Computer wins
    else {
        std::cout << "Computer wins this round!\n";
    }
    
    // Update master status after points change
    checkMastery(player);
}

Main Function: Run the Game #

Ties everything together, initializes the player, and handles the game loop:

int main() {
    Player humanPlayer;
    char computerWeapon[8];
    char playAgain;
    
    // Initialize player data
    std::cout << "Enter your name: ";
    std::cin.getline(humanPlayer.name, 41);
    // Clear any leftover newline from input buffer
    if (!std::cin) {
        std::cin.clear();
        std::cin.ignore(1000, '\n');
    }
    humanPlayer.points = 0;
    humanPlayer.master = false;
    
    std::cout << "\nWelcome to Rock Paper Scissors, " << humanPlayer.name << "!\n";
    std::cout << "Earn 10 points to become a Rock Paper Scissors Master!\n\n";
    
    // Game loop
    do {
        getPlayerWeapon(&humanPlayer);
        getComputerWeapon(computerWeapon);
        determineWinner(&humanPlayer, computerWeapon);
        
        // Display current status
        std::cout << "\nYour current points: " << humanPlayer.points << "\n";
        if (humanPlayer.master) {
            std::cout << "🎉 Congratulations! You are now a Master! 🎉\n";
        }
        
        // Ask to play again
        std::cout << "Play another round? (y/n): ";
        std::cin >> playAgain;
        std::cin.ignore(); // Clear newline for next input
        std::cout << "\n";
        
    } while (tolower(playAgain) == 'y');
    
    // Final goodbye
    std::cout << "Thanks for playing! Final score: " << humanPlayer.points << "\n";
    if (humanPlayer.master) {
        std::cout << "You finished as a Rock Paper Scissors Master! Awesome job!\n";
    }
    
    return 0;
}

Key Notes for Your Assignment #

• All struct members match exactly what your assignment requires (including array sizes)
• The checkMastery function uses a pointer to modify the player's master status directly
• Input validation ensures the weapon array only holds valid values
• Random seed initialization prevents the computer from making the same sequence of choices every run

内容的提问来源于stack exchange，提问作者pavlkara1