Please write down the output.
typedef enum {S0 =3, S1=0, S2, S3} State;
State assign_ment = S2;
switch (assign_ment){
	case 1:
		printf("SA");
		assign_ment = 3;
	case 2:
		printf("N");
		break;
case 3:
		printf("D");
	default:
		break;
}