C++ Volume of a Cylinder

#include <iostream>
using namespace std;

const double PI = 3.14159;

double calculateCylinderVolume(double radius, double height) {
    return PI  radius  radius * height;
}

int main() {
    double radius, height;

    cout << "Enter the radius of the cylinder: ";
    cin >> radius;

    cout << "Enter the height of the cylinder: ";
    cin >> height;

    double volume = calculateCylinderVolume(radius, height);

    cout << "The volume of the cylinder is: " << volume << endl;

    return 0;
}

Explanation: - #include <iostream>: Includes the input/output stream library for handling input and output operations. - using namespace std;: Declares that we are using the standard namespace to simplify access to its elements like cout, cin, etc. - const double PI = 3.14159;: Defines a constant variable PI to store the value of pi, which is approximately 3.14159. - double calculateCylinderVolume(double radius, double height): Function declaration to calculate the volume of a cylinder. It takes the radius and height of the cylinder as parameters and returns the calculated volume. - return PI radius radius * height;: Formula for calculating the volume of a cylinder using the formula V = πr²h, where PI is the constant for pi, radius is the radius of the cylinder, and height is the height of the cylinder. - int main(): The starting point of the program execution. - double radius, height;: Declaration of variables radius and height to store user input for the radius and height of the cylinder. - cout << "Enter the radius of the cylinder: ";: Outputs a message asking the user to input the radius of the cylinder. - cin >> radius;: Takes the user input for the radius and stores it in the variable radius. - cout << "Enter the height of the cylinder: ";: Outputs a message asking the user to input the height of the cylinder. - cin >> height;: Takes the user input for the height and stores it in the variable height. - double volume = calculateCylinderVolume(radius, height);: Calls the calculateCylinderVolume function with the provided radius and height values, storing the calculated volume in the volume variable. - cout << "The volume of the cylinder is: " << volume << endl;: Outputs the calculated volume of the cylinder to the console.