I need to write an object oriented C++ program (a class and a function to use it
ID: 3768289 • Letter: I
Question
I need to write an object oriented C++ program (a class and a function to use it). Also I need to use a file for my input data.
In regards to the problem I need help to use inheritance and polymorphism to calculate the force required to pull (at a constant velocity) and the weight of material that can be carried by a train consisting of different types of cars. The weight (W) and rolling friction coefficient (f) can be used to compute the force (F = fw). Consider flat bed (B), box (X), and tank (T) cars. The volume for each type of car is B (10 m3), and T (15 m3). Read the type of car and density (in kN/m3) of material being carried. A sample data file (train.dat) is : B5.3 X 6.7 X 5.6 X 7.3 T 9.8 T 8.4 T 10.3 B 3.2 B 4.2
Explanation / Answer
#include <iostream>
using namespace std;
class train{
public:
virtual void show(){cout << "train" << endl;}
};
class bed : public train{
void show(){cout << "B" << endl;}
};
class box : public train{
void show(){cout << "X" << endl;}
};
class tank : public train{
void show(){cout << "T" << endl;}
};
int main(void){
train* arr[4];
arr[0] = new train; arr[1] = new bed; arr[2] = new box; arr[3] = new tank;
for(int i = 0; i < 4; i++)
arr[i]->show();
system("PAUSE");
return 0;
}