Saturday, June 13, 2015

series(1^2 + 2^2 + …. + n^2)

#include<stdio.h>
///1^2 + 2^2 + …. + n^2
int main(){

    int n,i;
    int sum=0;

    printf("Enter any end number of this series: ");
    scanf("%d",&n);

    sum = (n * (n + 1) * (2 * n + 1 )) / 6;

    printf("Sum of the series : ");

    for(i =1;i<=n;i++){
         if (i != n)
             printf("%d^2 + ",i);
         else
             printf("%d^2 = %d ",i,sum);
    }

    return 0;
}

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