[問題] 繼承時的函數呼叫
請問為什麼下列程式碼的cout會是
Employee's Sal
Employee's Tax
Staff's bonus
Staff's Tax
3700
為什麼會先呼叫Employeee::Tax (Staff本身不是也有Tax？)
最後又會呼叫Staff::bonus和Staff::Tax ? (Tax用employee的，bonus用Staff的？)
開發平台：g++ , Linux
程式碼
#include <iostream>
using namespace std;
class Employee {
public:
Employee(int s) { salary = s; }
virtual int Sal() { cout << "Employee's Sal\n";
return salary - Tax() + bonus(); }
int Tax() { cout << "Employee's Tax\n";
return int(salary * 0.2); }
virtual int bonus() { cout << "Employee's bonus\n";
return 0; }
protected:
int salary;
};
class Staff : public Employee {
public:
Staff(int salary) : Employee(salary + 1000) {}
virtual int Tax() { cout << "Staff's Tax\n";
return int(salary * 0.1); }
int bonus() { cout << "Staff's bonus\n";
return Tax()+100; }
};
int main() {
Staff s(3000);
cout << s.Sal() << endl;
return 0;
}
※ 編輯: feathersss 來自: 203.67.223.239 (02/20 10:18)
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※ 編輯: feathersss 來自: 203.70.101.163 (02/21 20:51)
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