Function for returning total weigth of a train

Mircea1990 (1)
How can I override a function to return the total weigth of a train??


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class TrainRoute
{
....
int totalWeight()
	{

		return 100;
	}
}

class FreightTrainRoute : public TrainRoute
{
protected:
	int nbOfWagons;
	float* weigthPerWagon;

....

//this function to be orrided
int totalWeight()
{

}





Last edited on
AbstractionAnon (6954)
To override a function, you have to declare it virtual in the base class.

Why is weigthPerWagon a pointer?

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class TrainRoute
{
//    ....
    virtual int totalWeight()
//  ^^^^^^^
    {   return 100;
    }
};

class FreightTrainRoute : public TrainRoute
{
protected:
    int nbOfWagons;
    float* weigthPerWagon;
//    ....

        //this function to be overriden
    int totalWeight()
    {   return nbOfWagons * (*weigthPerWagon);
    }
};


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