Answer L26

#include <stdio.h>
#include <stdlib.h>
/* Puzzle A26 -- print a square of alternating stars and dots*/
int main()
{
  int row, col;
  int boardsize=16 ;
  
  for ( row=0; row<boardsize; row++ )
  {
    for ( col=0; col<boardsize; col++ )
    {
      if ( (row+col)%2 == 0 )
        printf("*");
      else
        printf(".");
    }
    printf("\n");
  }
  printf("\n");
  	
  return 0;
}