指向派生類C++的指針

Question

我在派生指向派生類的指針時遇到了一些麻煩。我認爲這與構造函數有關。我必須在派生類中創建一個新的構造函數嗎？如何從派生類創建指針？謝謝

Class Base 
{ 
    public: 



    int myfunction(int a,int b,int c) 
    { 
    return a+b+c; 
    } 
}; 

Class Derived: public Base 
{ 
    int newfunction(int a, int b, int c) 
    { 
    return a*b*c; 
    }; 

}; 


int main() 
{ 
// this doesn't work at all.. I get all errors every time I try to refer to the object 
//instantiated from my derived class. 
//I know it's my lack of understanding. 


Derived *NewObject = new Derived; 

//Why wont this work? 


} 

Answer 1

C++區分大小寫，關鍵字class是小寫字母。你爲這兩個類寫了Class，看起來它是你的代碼唯一的問題。