/* 
 * print n by m rectangle of 'x' as an example of using nested loops
 */
#include <stdio.h>

int main(void) {
	int n, m;
	printf("enter width and height of rectangle\n");
	if (scanf("%d %d", &n, &m) != 2) {
		printf("not numbers\n");
		return 1;
	}
	/* FIXME? maybe we should check here for non-positive */
	for (int i = 0; i < m; ++i) {
		for (int j = 0; j < n; ++j) {
			putchar('x');
		}
		putchar('\n');
	}
	return 0;
}