#include <stdio.h>

int sqrsum(int n)
{
  int i, sum;
  for (sum = 0, i = 1; i <= n; i++) {
    sum += i * i;
/*    printf("<%d>\n", sum); */
  }
  return sum;
}

int main()
{
  int n = 10;
  printf("input number: ");
  scanf("%d", &n);
  printf("sum : %d\n", sqrsum(n));
  return 0;
}
/* end */

input number: sum : 385