Question

我需要在课堂上使用数组存储所有汽车信息并打印出来。任何人都可以帮我编辑T.T. 他们在登记他们的汽车之后使用开关，他们想要注册多少辆汽车。它需要返回菜单并引导他们进行第二选择以更新其信息。第三是打印出他们想要打印的那个，他们可以键入而不打印全部第四，但是第四个是打印出所有。

#include <iostream>
#include <string>
#include <vector>


 using namespace std;

 class Vehicle
 {
protected:
    string Manufacturer;
    string Type;
    int Seatnumber;
public:
    Vehicle()
    {   
        Manufacturer="";
        Type="";
        Seatnumber=1;
    };
    Vehicle(string manufacturer,string type,int seatnumber)
    {   Manufacturer=manufacturer;
        Type=type;
        Seatnumber=seatnumber;
    };
    void setmanufacturer(string manufacturer)
    {   Manufacturer=manufacturer;
    };
    void settype(string type)
    {   Type=type;
    };
    void setseatnumber(int seatnumber)
    {   Seatnumber=seatnumber;
    };
    string getmanufacturer()
    {   return Manufacturer;
    }
    string gettype()
    {   return Type;    
    };
    int getseatnumber()
    {   return  Seatnumber;
    };
   };
   class Car: public Vehicle
   {
   protected:
    string Carplatenumber;
    string Model;
   public:
    Car():Vehicle()
    {
        Carplatenumber="";
        Model="";
    };
    Car(string carplatenumber, string model)
    {   Carplatenumber=carplatenumber;
        Model=model;
    };
    void setcarplatenumber(string carplatenumber)
    {   Carplatenumber=carplatenumber;
    };
    void setmodel(string model)
    {    Model=model;
    };
    string getcarplatenumber()
    {   return Carplatenumber;  
    };
    string getmodel()
    {   return Model;   
    };
    void display();
    };
    inline void Car::display(){

    cout<<Manufacturer;
    cout<<Type;
    cout<<Seatnumber;
    cout<<Carplatenumber;
    cout<<Model;

    };
   int main ()
    { 
   char choice;
   int size=0,seats;
Car car[size];
string manufacturer,type,carplatenumber,model;
cout<<"Please choice a selection: ";
cin>>choice;
bool True=true;
while(True){

switch(choice){
    case 'A':
        True=false;
        cout<<"How many cars information do you want to store in it : ";
        cin>>size;
        cout<<"\n";
        for(int i=0;i<size;i++){
            cout << "Enter car "<<i+1<<" Manufacturer : ";
            getline (cin,manufacturer);
            cin.ignore();
            car[size].setmanufacturer(manufacturer);
            cout << "Enter car "<<i+1<<" Type : ";
            getline (cin,type);
            cin.ignore();
            car[size].settype(type);
            cout << "Enter car "<<i+1<<" Seatsnumber of the car : ";
            cin >> seats;
            cin.ignore();
            car[size].setseatnumber(seats);
            cout << "Enter car "<<i+1<<" Model : ";
            getline (cin,model);
            cin.ignore();
            car[size].setmodel(model);
            True=true;
        }
        break;
    case'B':
        True=false;
        cout << "Hi,there please update your carplatenumber after u have gone through your new car!";
        getline(cin,carplatenumber);
        car[size].setcarplatenumber(carplatenumber);
        True=true;
        break;
    case'c':
        True=false;
            for(int i=0;i<size;i++){
                car[i].display();
                }
        True=true;
        break;

    default:cout<<"Invalid input";
}
 }
    return 0;
 }

Answer 1

首先，我建议您准确说出您遇到的问题。对于想要帮助你的人来说，这是非常重要的一点。

其次，C ++是区分大小写的编程语言，'A'和'a'是不同的。当然是'c'和'C'。

第三，关于你的问题。你错过了一次手术。

cin>>choice;
bool True=true;
while(True){
    switch(choice){
        case 'A':
            // some action
            break;
        case'B':
            // some action
            break;
        case'c':
            // some action
            break;    
        default:
            // some action
    }
    // this is the last line of loop
}

在最后一行循环之后，选择的价值是多少？ True的价值是多少（实际上不是一个非常好的名字）？

缩进对于代码阅读器也非常重要。你可以阅读谷歌风格指南

https://google.github.io/styleguide/cppguide.html

我的程序无法运行我已经尝试了3天

1 个答案: