從另一個

Question

我有以下文件中的一個類文件訪問的變量.hpp：

#include <iostream> 
#include <cstdlib> 

using namespace std; 

class shop{ 
    public: 
    string shopOption; 
     string shopOptions[6]= {"Buy", "buy", "Sell", "sell", "Leave", "leave"}; 
     string shopInv[3]= {"Sword", "Potion", "Arrows x 25"}; 
     int shopInvAmount= sizeof(shopInv)/sizeof(shopInv[0]); 
     int shopPrices[3]= {250, 55, 70}; 

    shop(){ 
     cout << "Shopkeeper: We buy, we sell, what's your buisness?" << endl; 
    } 
    void store(void){ 
     getline(cin,shopOption); 

     if(shopOption.compare(shopOptions[0]) == 0 || shopOption.compare(shopOptions[1]) == 0){ 
      buy(); 
     } 

     else if(shopOption.compare(shopOptions[2]) == 0 || shopOption.compare(shopOptions[3]) == 0){ 
      sell(); 
     } 

     else if(shopOption.compare(shopOptions[4]) == 0 || shopOption.compare(shopOptions[5]) == 0){ 
      leave(); 
     } 
    } 

    void buy(){ 
     srand(time(0)); 
     string buyQuotes[3]= {"What are you buyin', hon?", "Make it quick, I ain't got all day.", "Another day, another sell."}; 
     int quotePick= rand() % sizeof(buyQuotes)/sizeof(buyQuotes[0]) - 1; 
     if (quotePick < 0){ 
      quotePick= 0; 
     } 

     else if (quotePick > (sizeof(buyQuotes)/sizeof(buyQuotes))){ 
      quotePick= sizeof(buyQuotes)/sizeof(buyQuotes); 
     } 
     cout << "TEST:" << sizeof(shopInv)/sizeof(shopInv[0]) << endl; 
     cout << buyQuotes[quotePick] << endl; 
     cout << "SHOP INVENTORY" << endl << "--------------" << endl; 
     cout << endl; 
     for (int i=0; i < sizeof(shopInv)/sizeof(shopInv[0]); i++){ 
      cout << shopInv[i]<< ": " << shopPrices[i] << endl; 
     } 
     cout << endl << "What'll it be?:"; 
     getline(cin,shopOption); 
    } 
    void sell(){ 

    } 

    void leave(){ 

    } 
}; 

a第二player.hpp

class player{ 
    public: 
    int playerHP= 18; 
    string playerInv[5] {}; 
    int playerGold= 355; 
}; 

現在，我想做些什麼，是之後的字符選擇他們想要購買的物品，而它德量，（不編程還）檢查的價格組合物品，並查看角色手頭上是否有足夠的錢，如果角色購買物品，則將其添加到玩家的庫存中。

但是我想保留商店使用的值，以及與不同類文件中播放器相關的所有內容。 事情是，我不知道如何拉這樣的事情。

那麼，是否有可能從另一個文件中的另一個類訪問一個類的變量？ 如果不是，你會如何解決這個問題？

Answer 1

從這裏開始閱讀：How does the compilation/linking process work?以獲得多個文件爲您工作。無論您使用哪種編碼環境，都會爲您自動執行該過程，因此您的賠率相當不錯。

然後考慮把項目類

class Item 
{ 
public: 
    Item(string name, int price): mName(name), mPrice(price) 
    { 
    } 
    string getName() 
    { 
     return mName; 
    } 
    string getPrice() 
    { 
     return mPrice; 
    } 
    // other functions 
private: 
    string mName; 
    int mPrice; 
    // other stuff 
} 

在店鋪和播放器，KEEP項

vector<Item> items; 

當玩家試圖購買商品，發現它在列表中的列表，確保玩家可以負擔得起，將其從商店列表中移除並將其添加到玩家列表中。