/* 
 * Program to print block of x's as an example of using nested loops.
 */
#include <stdio.h>

int main(void) {
	int rows; 
	int cols;
	printf("enter rows, cols:\n"); 
	if (scanf("%d %d", &rows, &cols) != 2) {
		printf("not numbers\n");
		return 1;
	}
	/* print "rows" rows */
	for (int i = 1; i <= rows; ++i) {
		/* print "cols" x's */
		for (int j = 1; j <= cols; ++j) {
			putchar('x');
		}
		putchar('\n');
	}
	return 0;
}