c++ - 纸牌游戏中的结构 vector 之后不显示纸牌，不确定是否甚至创建了牌组

Question

我正在用 C++ 制作一个基本的纸牌游戏，我知道我的纸牌正在创建，我只是不知道它们是否被放入 vector 中。

我已经尝试使用函数来传回信息，我已经在不洗牌的情况下对其进行了测试，看它是否至少检测到了正确的猜测。

struct card
{
   string cardFace, cardSuit;
};


int main()
{

    vector<card> deck;
    card currentCard;
    string input;

    for (int i = 0; i < 4; i++)
    {
        string suits[4] = { "Hearts", "Diamonds", "Spades", "Clubs" };

        for (int j = 1; j < 13; j++)//13 cards per suit
        {
            card a;

            if (j == 1)
                a.cardFace = "Ace";

            if (j == 11)
                a.cardFace = "Jack";

            if (j == 12)
                a.cardFace = "Queen";

            if (j == 13)
                a.cardFace = "King";

            else
                a.cardFace = to_string(j);

            a.cardSuit = suits[i];
            deck.push_back(a);
        }
    }

    random_shuffle(deck.begin(), deck.end());

    currentCard.cardFace = deck[0].cardFace;
    currentCard.cardSuit = deck[0].cardSuit;

    if(input == currentCard.cardFace)
    cout << currentCard.cardFace << " is the right answer!" << endl;

    return 0;
}

我希望输出是:Jack is the right answer!但我得到:是正确答案!

Answer 1

我在 IdeOne 上试过你程序的变体:

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

struct card
{
   string cardFace, cardSuit;
};


int main()
{
    vector<card> deck;
    card currentCard;

    for (int i = 0; i < 4; i++)
    {
        string suits[4] = { "Hearts", "Diamonds", "Spades", "Clubs" };

        for (int j = 1; j < 13; j++)//13 cards per suit
        {
            card a;

            if (j == 1)
                a.cardFace = "Ace";

            if (j == 11)
                a.cardFace = "Jack";

            if (j == 12)
                a.cardFace = "Queen";

            if (j == 13)
                a.cardFace = "King";

            else
                a.cardFace = to_string(j);

            a.cardSuit = suits[i];
            deck.push_back(a);
        }
    }

    random_shuffle(deck.begin(), deck.end());

    currentCard.cardFace = deck[0].cardFace;
    currentCard.cardSuit = deck[0].cardSuit;

    cout << currentCard.cardFace << " " << currentCard.cardSuit << " is the right answer!" << endl;

    return 0;
}

它按预期工作。