Thread: need help finding where the problem is for this code

Hi everyone,
I am very new to programming and I tried to write this code in c++ to calculate mass, volume, and area for a sphere and a solid. It compiles but I get nonsense answers everytime I run the program..I know there is a error in my logic somewhere but I just can't see it.

Here is the code

Code:

#include<iostream>
using namespace std;

class TSolid{
public:
  TSolid(){};
  virtual ~TSolid(){};
protected:
  double mass, volume, density, area;

public:
  double getArea(){return area;}
  double getVolume(){return volume;}
  double getMass(){return mass;}

  void setDensity(double d){density=d;}
  virtual void ComputeMass(){;};
  virtual void ComputeVolume(){;};
  virtual void ComputeArea(){;};
};

class TSphere:public TSolid{
public:
  TSphere (){};
  virtual ~TSphere (){};
  double radius,d;
 
  void ComputeArea (){area= 4*3.14*radius*radius;}
  void ComputeVolume (){volume=1.33*3.14*radius*radius*radius;}
  void ComputeMass () {mass=d*3.14*1.33*radius*radius*radius;} 
};

class TCube:public TSolid{
public:
  TCube(){};
  virtual ~TCube(){};
  double side,d;
  void ComputeArea (){area=6*side*side;}
  void ComputeVolume (){volume=side*side*side;}
  void ComputeMass (){mass=d*side*side*side;}
};

int main ()
{
  double side,d,radius;
  d=30;
  radius=15;
  side=12;
  TCube box;
  TSphere ball;
  cout<<"d="<<d<<endl;
  cout<<"radius="<<radius<<endl;
  cout<<"side="<<side<<endl;
  cout << "sphere info:"<<endl;
  cout << "area = " << ball.getArea()<<endl;
  cout <<"area=" <<4*3.14*radius*radius<<endl;
  ball.ComputeVolume();
  cout << "volume =" << ball.getVolume()<<endl;
  ball.ComputeMass();
  cout << "mass = " <<ball.getMass()<<endl;
  cout<< "cube info: "<<endl;
  box.ComputeArea();
  cout<< "area = " << box.getArea()<<endl;
  box.ComputeVolume();
  cout << "volume = " << box.getVolume()<<endl;
  box.ComputeMass();
  cout << "mass = " << box.getMass()<<endl;
  cout<<"side="<<side<<endl;
  return 0;
}

thanks for the help

yep, that was definitely the issue. i finally get the right answers! this is exciting, thanks a lot