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

int main(void) {

	int rows, cols;
	printf("enter rows, cols\n");
	if (scanf("%d %d", &rows, &cols) != 2) {
		printf("not numbers\n");
		return 1;
	}
	/* print rows */
	for (int c = 0; c < cols; ++c) {
		/* print a row */
		for (int r = 0; r < rows; ++r) {
			putchar('X');
		}
		putchar('\n');
	}

	return 0;
}