Find sum of square of n natural number in 'C'

Example



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


void main()

{

int n,i,sum=0;
clrscr();
printf("Enter the number :");
scanf("%d",&n);
for(i=1;i<=n;i++)
 {
sum=sum+(i*i);
}
printf("sum of square of n natural number is:%d",sum);


 getch();
}
/*========================================================================
OUTPUT
Enter the number :2
sum of square of n natural number is:5
*/