17 : C Program to Calculate Surface area of Sphere

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Variables :

1. radius : (Datatype int) : to represent the side of Sphere.

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

2. surface_area_of_sphere : (Datatype long) : to store volume of Surface area of Sphere.





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, %f for float and %ld for long. \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, %f for float and %ld for long.







Formula :

Surface Area of a Sphere : 4 x π x r2


/*
 * 1000+ C programs + tutorials
 *
 *
 * 16_calculate_surface_area_of_shpere.c
 *
 *
 *  Created on: Oct 20, 2014
 *  Author: Code2care.org
 */

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

void main() {

  int radius;
  float PI = 3.142;
  float surface_area_of_sphere;

//	clrscr();

	printf(" Program to calculate Surface Area of a Sphere :  ");

	printf("\n\n Enter the Radius of Sphere : ");
	scanf("%d", &radius);
    
    
    
    surface_area_of_sphere = 4*PI*radius*radius;


	printf("\n\n Surface area of Sphere with side as %d = %lf",radius,surface_area_of_sphere);

//	getch();


}




Using pow(x,y) function : 


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

void main() {

  int radius;
  float PI = 3.142;
  float surface_area_of_sphere;

//	clrscr();

	printf(" Program to calculate Surface Area of a Sphere :  ");

	printf("\n\n Enter the Radius of Sphere : ");
	scanf("%d", &radius);
    
    
    
    surface_area_of_sphere = 4*PI*pow(radius,2);


	printf("\n\n Surface area of Sphere with side as %d = %lf",radius,surface_area_of_sphere);

//	getch();


}










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