#include <stdio.h>
int main()
{
int n, k;
int n1, n2, k1, k2;
printf("Please enter n, k: ");
scanf("%d%d", &n, &k);
/* print n chess lines */
for (n1 = 0; n1 < n; ++n1)
{
/* repeat one line k times */
for (k1 = 0; k1 < k; ++k1)
{
/* print n cells */
for (n2 = 0; n2 < n; ++n2)
{
/* draw a cell */
for (k2 = 0; k2 < k; ++k2)
{
if ((n1 + n2) % 2) putchar('#');
else putchar(' ');
}
}
putchar('\n');
}
}
return 0;
}