sum of square series

By: adarshsojitra on 15:30

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this program is to illustrate sequence:  1²+2²+3²+4²+..........+n<sup>2

Program:</sup>

/*This program is for counting 1^2+2^2+3^2+........+n^2*/
#include<stdio.h>
#include<conio.h>
main()
{
        long n,ans,i;
        clrscr();
        printf("Enter number: ");
        scanf("%ld",&n);
        for(i=1;i<=n;i++)
        {
                printf(" + %ld^2",i);
        }
        ans=(n*(n+1)*((2*n)+1))/6;
        printf(" is %ld",ans);
        getch();

}