#include <iostream>
using namespace std;
class fruit{
private:
string name;
int amount;
float price;
public:
void getData(){
cout <<"Enter name of fruit: ";
cin.ignore();
getline(cin, name);
cout <<"Enter amount: ";
cin >>amount;
cout <<"Enter price: $";
cin >>price;
cout <<endl;
}
void displayData(){
cout <<"Fruit: " <<name <<endl;
cout <<"In stock: " <<amount <<endl;
cout <<"Price: $" <<price <<endl;
}
};
class seller{
public:
void display(fruit& obj){
cout <<"You are a seller!" <<endl <<endl;
obj.getData();
}
};
class buyer{
public:
void display(fruit& obj){
cout <<"You are a buyer!" <<endl <<endl;
obj.displayData();
}
};
int main(){
int userChoice;
cout <<"Welcome to shop simulator!" <<endl;
while(true){
cout <<"Please select anything from the following:" <<endl;
cout <<"[0] Exit the program" <<endl;
cout <<"[1] Seller" <<endl;
cout <<"[2] Buyer" <<endl;
cin >>userChoice;
fruit obj1;
seller obj2;
buyer obj3;
switch(userChoice){
case 0:
_Exit(0);
break;
case 1:
obj2.display(obj1);
break;
case 2:
obj3.display(obj1);
break;
}
}
}
每当我尝试在买方选项中输入水果及其属性，然后尝试将其访问卖方选项时，只会显示“金额”和“价格”。（我尝试过使用字符数组，但它可以工作，但是当我使用字符串时，它不起作用）。
这三个变量：
fruit obj1;
seller obj2;
buyer obj3;
每次循环时从头开始创建。因此，您在迭代1中输入的值不会保留在第二个迭代中。你得到的事实price和amount正确只是一个巧合。
要快速解决此问题，只需将变量移至循环外：
fruit obj1;
seller obj2;
buyer obj3;
cout <<"Welcome to shop simulator!" <<endl;
while(true){
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