我目前正在编写自己的大项目以进行Uni任务。我几乎完成了大部分工作，但我目前仍然遇到一个错误，我不确定如何修复。每次我使用g ++编译我的代码并运行生成的程序时，我都会收到错误＆＃34; Segmentation Fault（core dumped）＆＃34;。
朋友告诉我，可能是因为我的播放器:: addItem类正在使用字符串，它应该是一个空格。但是，如果我将其更改为void，我还需要将main中的函数更改为void吗？这会修复错误吗？
这是我的player.cpp文件：
#include "Player.h"
#include <iostream>
#include <string>
using namespace std;
Player::Player(){
}
void Player::setName(std::string myName){
name = myName;
}
//Get the players name
std::string Player::GetName()
{
return name;
}
//Add item to players inventory
std::string Player::AddItem(std::string item, int itemPrice)
{
//Is players inventory not full?
if (IsInventoryFull())
{
std::cout << "Inventory is full.";
}
else
{
//Can player afford item?
if (goldCoins >= itemPrice)
{
goldCoins -= itemPrice;
numbOfItems++;
std::cout << "You have purchased " << item << "." << "\n";
inventory.push_back(item); //Add item to inventory
return item;
}
//If player cant afford item
else
{
std::cout << "You cannot afford this item." << "\n";
}
}
}
void Player::SellItem(int itemNum, int itemPrice)
{
char response;
std::cout << "Are you sure you want to sell: " << inventory[itemNum] << "? 'y' - Yes. 'n' - No." << "\n";
std::cin >> response;
switch (response)
{
case 'y':
numbOfItems++;
goldCoins += itemPrice;
inventory.erase(inventory.begin() + itemNum);
break;
case 'n':
std::cout << "That is ok." << "\n";
break;
default:
std::cout << "Please enter correct data." << "\n";
}
}
//Check to see if players inventory is full
bool Player::IsInventoryFull()
{
//If players inventory isnt full
if (numbOfItems < maxNumbItems)
{
return false;
}
//If players inventory is full
else
{
return true;
}
}
//Return size of players inventory
int Player::InventoryCapacity()
{
return inventory.size();
}
//Get the players gold
int Player::GetGold()
{
return goldCoins;
}
//List the players inventory
void Player::ListInventory()
{
int itemNumb = 0; //item number in menu
for (int i = 0; i < inventory.size(); i++)
{
itemNumb++;
std::cout << itemNumb << ": " << inventory[i] << "\n";
}
}
int Player::GetNumbOfItems()
{
return numbOfItems;
}
Player::~Player()
{
}
这是我的主要功能（shop.cpp）：
// Shop.cpp : Defines the entry point for the terminal (e.g. main)
#include "Player.h"
#include "ShopKeeper.h"
#include <iostream>
#include <string>
using namespace std;
int main()
{
const int maxNumbItems = 5; //Maximum number of items that inventory can store
int goldCoins = 150, //Amount of gold coins the player has
numbOfItems = 0; //Number of con-current items player holds
std::vector<std::string> inventory; //Players inventory
std::string name = "Gorrex"; //Players name
Player* player; //The player
player->setName(name);
ShopKeeper shopKeeper; //The shop keeper
int response; //Menu navigation
std::cout << "Greetings " << player->GetName() << ". Feel free to browse our exotic collectin of fruits." << "\n";
std::cout << "1: Purchase Items. 2: Sell Items. 3: List Your Items. 4: Show Gold. 5: Exit" << "\n";
do
{
std::cin >> response;
switch (response)
{
case 1:
shopKeeper.PurchaseItem(player);
break;
case 2:
shopKeeper.SellItem(player);
break;
case 3:
player->ListInventory();
break;
case 4:
std::cout << "You have " << player->GetGold() << " gold coins." << "\n";
break;
case 5:
std::cout << "Thank you for shopping." << "\n";
break;
default:
std::cout << "Please enter valid data." << "\n";
std::cout << "1: Purchase Items. 2: Sell Items. 3: List Your Items. 4: Show Gold. 5: Exit" << "\n";
}
std::cout << "1: Purchase Items. 2: Sell Items. 3: List Your Items. 4: Show Gold. 5: Exit" << "\n";
} while (response != 5);
//Keep window open
std::string barn;
std::cin >> barn;
return 0;
}
我应该创建一个void IsInventoryFull变量并调用它而不是字符串版本＆＃34;库存已满＃34;？
使用指针的代码：
#include "ShopKeeper.h"
#include "Player.h"
#include <iostream>
#include <string>
using namespace std;
//Player purchases item from shop keeper
void ShopKeeper::PurchaseItem(Player* player)
{
//Player player;
int response = 0; //Menu navigation
std::cout << "1: Orange - 30 gold. 2: Apple - 50 gold. 3: Lemon - 10 gold. 4: Dragon Fruit - 75 gold. 5: Mandarin - 25 gold." << "\n";
do
{
std::cin >> response;
switch (response)
{
case 1:
player->AddItem("Orange", 30);
break;
case 2:
player->AddItem("Apple", 50);
break;
case 3:
player->AddItem("Lemon", 10);
break;
case 4:
player->AddItem("Dragon Fruit", 75);
break;
case 5:
player->AddItem("Mandarin", 25);
break;
default:
std::cout << "Please enter valid data." << "\n";
std::cout << "1: Orange - 30 gold. 2: Apple - 50 gold. 3: Lemon - 10 gold. 4: Dragon Fruit - 75 gold. 5: Mandarin - 25 gold." << "\n";
}
} while (response > 5 || response < 1);
}
//Shop keeper sells item to player
void ShopKeeper::SellItem(Player* player)
{
//Player player;
int response = 0;
player->ListInventory();
if (response < player->GetNumbOfItems())
{
std::cin >> response;
switch (response)
{
case 1:
player->SellItem(0, 20);
break;
case 2:
player->SellItem(1, 20);
break;
case 3:
player->SellItem(2, 20);
break;
case 4:
player->SellItem(3, 20);
break;
case 5:
player->SellItem(4, 20);
break;
default:
std::cout << "Please enter valid data." << "\n";
player->ListInventory();
}
}
else
{
std::cout << "Item doesn't exist.";
}
}
ShopKeeper::ShopKeeper()
{
}
ShopKeeper::~ShopKeeper()
{
}