/****************************************************************
 *	Module name  :	checker.c                               *
 *	Purpose      :	prints a checker board                  *
 *	Created      :	??-??-89				* 
 *	Last edited  : 	24-08-89		Version 1.0	*
 * 	Copyright    :	G R Buckeridge				*
 ****************************************************************/


#include stdio.h

main()
	{
	int num,g,h,i,j;
	char col;
	while (1)
	{	
	printf("Enter a digit between 1 and 6 ");
	scanf(" %d",&num);
	if (num>0 && num<7) break;
	}
	col=' ';
	for (g=1;g<=2*num;++g)
		{
		for (h=1;h<=num;++h)
			{	
			for (i=1;i<=2*num;++i)
				{
				for (j=1;j<=num;++j)
					printf("%c",col);
				if (col==' ') col='*'; else col=' ';
				}
			printf("\n");
			}
	if (col==' ') col='*'; else col=' ';

		}
	}	l);
				if (col==' ') col='*'; else col=' ';
				}
			pri