Question

(C++ program)

Write and Design a Star Class definition.

Attribute of a Star are :
- radius
- age
- coordinates in space: x,y.z
Behaviors of a Star are:
- calculateVolume()
- calculateSurfaceArea()
- calculateCircumference()
- DisplayCoordinates()
- DisplayStar()

be sure to supply constructor() method(s) and all your set() and get() methods. The above is only a generic description of the class Star. You will need to design the datatypes, method return values, method parameters, etc...

Sphere Formulas in terms of radius r:

• Volume of a sphere:
  • V = (4/3)πr³
• Circumference of a sphere:
  • C = 2πr
• Surface area of a sphere:
  • A = 4πr²

Answer 1

Program Code Screenshot :

Sample Output :

Program Code to Copy

#include <iostream>
#include <cmath>

using namespace std;

class Star{
private:
double radius;
int age;
  
public:
Star(double r, int a){
radius = r;
age = a;
}
  
public double getRadius(){
return radius;
}
  
public void setRadius(double r){
radius = r;
}
  
public double getAge(){
return age;
}
  
public void setAge(int a){
age = a;
}
  
//calculate the volume
double calculateVolume(){
return (4.0/3)*M_PI*radius*radius*radius;
}
  
//Calculate the surface area
double calculateSurfaceArea(){
return 4*M_PI*radius*radius;
}
  
//Calculate the Circumference
double calculateCircumference(){
return 2*M_PI*radius;
}
  
void DisplayCoordinates(){
//Description not given
}
  
//Display the star attributes
void DisplayStar(){
cout<<"Star, radius : "<<radius<<", Age : "<<age<<endl;
}
};

int main()
{
Star s(5.4,1000000);
s.DisplayStar();
cout<<"Circumference "<<s.calculateCircumference()<<endl;
cout<<"Area "<<s.calculateSurfaceArea()<<endl;
cout<<"Volume "<<s.calculateVolume()<<endl;

return 0;
}