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C Program: Volume of a Sphere

Introduction (Sphere Volume)

A sphere is a perfectly round 3D solid object where every point on its surface is equidistant from the center.
Examples in real life include balls, globes, and bubbles.

The volume of a sphere represents the total space inside it.
The formula is:

Volume = 3/4 π r³

where

• r = radius of the sphere
• π (pi) ≈ 3.14159

C Program: Volume of a Sphere

#include <stdio.h>
#define PI 3.14159   // Define constant PI
 
int main() {
    float radius, volume;
 
    // Input radius
    printf("Enter the radius of the sphere: ");
    scanf("%f", &radius);
 
    // Calculate volume
    volume = (4.0/3.0) * PI * radius * radius * radius;
 
    // Display result
    printf("Volume of Sphere = %.2f\n", volume);
 
    return 0;
}
 
 

 
OUTPUT 1 :
Enter the radius of the sphere: 7
Volume of Sphere = 1436.76


OUTPUT 2 :
Enter the radius of the sphere: 3.5
Volume of Sphere = 179.59

Explanation

1. The user enters the radius of the sphere.
2. Formula used: (4/3) × π × r³.
3. PI is defined using #define for accuracy.
4. The program prints the volume rounded to two decimals.