Answer L13

#include <stdio.h>
#include <stdlib.h>

/* Puzzle L13 -- print integers from 1 to n that are not 
|  multiples of 3 or 5.
|  Print 10 integers per line.
|  End the last line with "\n", even if the line has fewer than
|  ten numbers on it.
|
*/
int main()
{
  int j;
  int count = 0;
  int n = 100;
  
  for (j=1; j<=n; j++ )
  {
    if ( !(j%3 == 0 || j%5 == 0 ) )
    {
      printf("%3d", j);
      if ( count%10==9 ) printf("\n");
      count++ ;
    }
  }
  if ( count%10 != 9 ) printf("\n");
  	
  return 0;
}