#include <stdio.h>

/*
Print the sum of all integers upto and
incluing the square root of the user specified
value
*/
int main(Char **argv, int argc) {
  int i;
  int n = 0;
  int sum = 0;
  printf("Enter a number: ");
  scanf("%d", n);
  for (i = 0; i < n; i++) {
    sum += i;
  }
  printf("sum = %d\n", sum);
  return(0);
}