我有一個文件,我正在讀取要創建的對象類型,金額和價格。我已經驗證過文件正在被正確讀取,並且這些值被放置在變量類型,數量和價格中,但是程序會獲取Checkout.cpp中的第一個糖果構造函數,並在創建該對象之前停止並退出。 Candy和Cookie類繼承自DessertItem基類,並且向量「甜點」類型爲DessertItem。無法從輸入文件創建對象
Checkout.h
class Checkout{
private:
std::vector<DessertItem*> dessertList;
std::string fileToOpen;
int type;
double quantity;
double price;
public:
//constructor
Checkout(std::string);
//read file
std::ifstream desserts{};
//sets
void setFileName(std::string);
//gets
std::string getFileName();
//read file and add correct object to vector
void readFile();
//recipt display method
void displayReceipt();
};
在Checkout.cpp
while(desserts >> type >> quantity >> price){
if(type==1){
std::cout << "type 1 condition" << '\n';
std::cout << price << '\n';
//gets to here and then crashes
Candy* candy = new Candy(quantity,price);
dessertList.push_back(candy);
}
Candy.h
class Candy : public DessertItem{
private:
double weight;
double priceLB;
const std::string itemType= "Candy";
public:
//construtor
Candy(double,double);
//destructor
~Candy();
//sets
void setWeight(double);
void setPrice(double);
//gets
double getWeight();
double getPrice();
//virtual print
virtual void print();
//virtual calculate cost
double calculateCost(double,double);
};
糖果構造相關的代碼
Candy :: Candy(double weight, double priceLB):DessertItem(itemType, calculateCost(weight,priceLB)){
setWeight(weight);
setPrice(priceLB);
std::cout << "made candy" << '\n';
}
DessertItem.h
class DessertItem{
private:
std::string dessertName;
double dessertCost;
public:
//construtor
DessertItem(std::string, double);
//destructor
~DessertItem();
//sets
void setName(std::string);
void setCost(double);
//gets
std::string getName();
double getCost();
//virtual print
virtual void print();
//virtual calculate cost
virtual double calculateCost();
};
DessertItem.cpp
//constructor accepting 1 argument
DessertItem :: DessertItem(string name, double cost){
setName(name);
setCost(cost);
}
//destructor
DessertItem :: ~DessertItem(){}
//sets
void DessertItem :: setName(string name){
dessertName=name;
}
void DessertItem :: setCost(double cost){
dessertCost=cost;
}
//gets
string DessertItem:: getName(){
return dessertName;
}
double DessertItem :: getCost(){
return dessertCost;
}
//virtual print
void DessertItem :: print(){
}
//virtual calculate cost method
double DessertItem :: calculateCost(){
}
http://stackoverflow.com/help/mcve – melpomene
輸出什麼做你現在 – Erix
輸出「1型條件」(第一行該文件是類型1),然後退出 –