C++ Exercises: Calculate the volume of a Cone

Last update on August 11 2025 12:57:14 (UTC/GMT +8 hours)

Cone Volume

Write a C++ program to calculate the volume of a cone.

Sample Solution:

C++ Code :

#include <iostream> // Including the input-output stream header file
#include <string> // Including the string header file (although it's not used in this code)

using namespace std; // Using the standard namespace

int main() // Start of the main function
{
    const float pi = 3.14159; // Declaring a constant variable 'pi' to store the value of pi

    float R, H, V; // Declaring variables to store the radius, height, and volume of the cone

    cout << "Input Cone's radius: "; // Outputting a message to prompt the user to input the cone's radius
    cin >> R; // Reading the cone's radius input from the user

    cout << "Input Cone's height: "; // Outputting a message to prompt the user to input the cone's height
    cin >> H; // Reading the cone's height input from the user

    // Calculating the volume of the cone using the formula: V = (1/3) * π * R^2 * H
    V = (1.0 / 3.0) * pi * (R * R) * H;

    cout << "The volume of the cone is: " << V; // Outputting the calculated volume of the cone

    return 0; // Return statement indicating successful completion of the program
}

Sample Input: 5 3

Sample Output:

Input Cone's radius: Input Cone's height: The volume of the cone is: 78.5397

Flowchart:

For more Practice: Solve these Related Problems:

Write a C++ program to compute the volume of a cone given its radius and height, using a function for calculation.
Write a C++ program that calculates the volume of a cone and compares it to the volume of a cylinder with the same base.
Write a C++ program to determine the volume of a cone using a constant for pi and display the result with two decimal places.
Write a C++ program that reads the radius and height of a cone, computes its volume, and then prints the result in a formatted style.

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C++ Code Editor:

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