Question

IN C++

Modify the above program to compute the side area, total area, and volume of a cylinder and the area and volume of a sphere, depending on the choice that the user makes. Your program should ask users to enter 1 to choose cylinder or 2 for sphere, and display an "invalid choice error" for other values.

For a cylinder, we want to compute:

Side area: (2*PI*r) * h

Total Area: 2*(PI*r2) + Side area

Volume: (PI*r2)*h

For a sphere, we want to compute:

Surface area: 4*PI*r2

Volume: (4.0/3.0)*PI*r3.

Use overloading whenever possible. Provide comments for any functions that are overloaded and explain why they could be overloaded

Answer 1

In this program, we are going to overload two function

1. volume
2. totalArea

The code for the program looks is attached below.

#include<bits/stdc++.h>
using namespace std;
#define Pi 2*acos(0.0)

//Overloading on volume for Sphere
long double volume(double r){
        r = r*r*r;
        return (4.0/3.0)*Pi*r;
}
//Overloading on voulme for Cylinder
long double volume(double r, double h){
        return Pi*r*r*h;
}

// sideArea for Calculating the Side Area of Cylinder
long double sideArea(double r, double h){
        return (2.0)*Pi*r*h;
}

// Overloadig on totalArea for Cylinder
long double totalArea(double r, double sideArea){
        r = r*r;
        return ((2.0)*Pi*r)+(sideArea);
}

// Overloading on totalArea for surface Area of Sphere
long double totalArea(double r){
        return (4.0)*Pi*r*r;
}

int main(){
        int x;
        cin>>x;
        if(x == 1){
                cout<<"For cylinder enter the value of radius and height respectively\n";
                long double rCy,hCy;
                cin>>rCy>>hCy;
                long double sideAreaCy, totalAreaCy, volumeCylinder;
                sideAreaCy = sideArea(rCy, hCy); // No function Overloading is used
                totalAreaCy = totalArea(rCy, sideAreaCy); // Using totalArea as Fucntion Overloading
                volumeCylinder = volume(rCy, hCy); //volume of Cylinder  ----> Function Overloading
                cout<<"Side Area of Cylinder : "<<sideAreaCy<<endl; // Print the side Area of Cylinder
                cout<<"Total Area of Cylinder : "<<totalAreaCy<<endl; // Print the total Area of Cylinder
                cout<<"Volume of Cylinder : "<<volumeCylinder<<endl; //Print the volume of Cylinder
        }else if( x == 2){
                cout<<"For Sphere enter the value of radius \n";
                long double rSp;
                cin>>rSp;
                long double surfaceArea,  volumeSphere;
                surfaceArea = totalArea(rSp); //Surface Area of Sphere Using totalArea Function -----> Function Overloading
                volumeSphere = volume(rSp); //Volume of Sphere using voulme Function ---------> Function Overloading
                cout<<"Surface Area of Sphere : "<<surfaceArea<<endl; //Print Surface Area of Sphere
                cout<<"Volume of Sphere : "<<volumeSphere<<endl; // Print the Volume of Sphere
        }else{
                cout<<"invalid choice error\n";
        }
        return 0;
}

Output