@define test0(x){
	switch(x){
	case 1:
		printf("1\n");
		break;
	case 2:
		printf("2\n");
		break;
	default:
		printf("default\n");
		break;
	case 3:
		printf("3\n");
		break;
	case 4:
	case 5:
		printf("%d\n", x);
		break;
	case 6:
		printf("6\n");
	case 7:
		printf("6 or 7\n");
		break;
	case 8:
		printf("8\n");
	}
}


for(i = 0; i < 10; i++){
	printf("%d -> ", i);
	test0(i);
}