# 15 : C Program to Calculate Volume of Ellipsoid

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A Ellipsoid has 3 radii, so you need ask user to input these 3 radii and store in int variables r1,r2 and r3. PI value is needed to calculate volume of Ellipsoid.

Variables :

1. r1 : (Datatype int) : to represent the radius 1 of Ellipsoid.

2. r2 : (Datatype int) : to represent the radius 2 of Ellipsoid.

3. r3 : (Datatype int) : to represent the radius 3 of Ellipsoid.

2. PI : (Datatype float) : static variable to represent constant PI value upto 3 decimal places i.e 3.142

3. volume_of_ellipsoid : (Datatype float) : to store volume of Ellipsoid calculated.

Functions :

printf() : is used to display something on the console/screen. Format specifier %d in printf function is used to display a int variable on screen and %f for float. \n is used to add a newline

scanf() : is used to fetch data inputted by the user on the console/screen using keyboard. %d in scanf is indicates that inputted text is of type int and %f for float.

Formula :

Volume of a Ellipsoid : (4/3) x π x radius1 x radius2 x radius3

``````
/*
* 1000+ C programs + tutorials
*
*
* 15_calculate_volume_of_ellipsoid.c
*
*
*  Created on: Oct 20, 2014
*  Author: Code2care.org
*/

#include <stdio.h>
//#include <conio.h>

void main() {

int r1,r2,r3;
float volume_of_ellipsoid;
float PI = 3.142;

//	clrscr();

printf(" Program to calculate Volume of a Ellipsoid :  ");

printf("\n\n Enter the Radius 1 of Ellipsoid : ");
scanf("%d", &r1);

printf("\n\n Enter the Radius 2 of Ellipsoid : ");
scanf("%d", &r2);

printf("\n\n Enter the Radius 3 of Ellipsoid : ");
scanf("%d", &r3);

volume_of_ellipsoid = (4/3)*(PI*r1*r2*r3);

printf("\n\n Volume of Ellipsoid with (r1,r2,r3) as (%d,%d,%d) = %f",r1,r2,r3,volume_of_ellipsoid);

//	getch();

}```
```

• Output :

Program to calculate Volume of a Ellipsoid :

Enter the Radius 1 of Ellipsoid : 2

Enter the Radius 2 of Ellipsoid : 4

Enter the Radius 3 of Ellipsoid : 6

Volume of Ellipsoid with (r1,r2,r3) as (2,4,6) = 150.815994

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