c++ - 按值删除 vector 中的元素

Question

如何从 Flight 中检索对象以与 main 中的输入 (flightNumber) 进行比较？如何在 main 中声明属性类型？

当我编译时，显示一条错误消息:invalid conversion of 'int' to '*Flight*'在agent1.delete(flightNumber); .

class Flight
{
    int FlightNumber 
};

class TravelAgent
{
    vector <Flight *> flightList;
};

void Agent::delete(Flight *obj)
{
    vector<Flight*>::iterator ptr;
    for(ptr=flightList.begin();ptr!=flightList.end();ptr++)
    {
        if((*Ptr)==obj)
        {
            flightList.erase(ptr);
            break;
        }
    }
    if ((ptr) == flightList.end())
    {
        cout<<"Flight not found"<<endl;
    }
}

int main
{
      Agent agent1;
      int flightNumber;
      cout<<"Enter the number of the flight: "<<flush;
      in>>flightNumber;
      agent1.delete(flightNumber); 
}

Answer 1

您可以在 Flight 类中添加(如果不存在) setter/getter

class Flight{
int FlightNumber;

public:

int getflightNumber(){ return flightNumber;}
};

然后按照以下步骤进行:-

void Agent::delete(int flightNumber)
{
    vector<Flight*>::iterator ptr;
    for(ptr=flightList.begin();ptr!=flightList.end();ptr++)
    {
        if(((*Ptr)->getflightNumber() == flightNumber)
        {
            flightList.erase(ptr);
            break;
        }
    }
    if ((fPtr) == listFlight.end())
    {
        cout<<"Flight not found"<<endl;
    }
}