#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// ----------------------------------------------
// main function
// ----------------------------------------------
int main() {
	int x, y;
	// str is NULL so it will be allocated by getline
	char *str = NULL;
	size_t size;
	
	// will read two integers followed by '\n'
	fscanf(stdin, "%d%d\n", &x, &y);
	
	printf("x = %d, y = %d\n", x, y);
	
	fflush(stdin);
	getline(&str, &size, stdin);
	
	fprintf(stderr, "str = [%s] of allocated size = %lu and real size %lu\n", str, size, strlen(str));
	free(str);
	
	return 0;
}