#include <stdio.h>

/* switch statement example */

int main() {

	char student_code;

	printf("Input student code (a-d)\n");
	scanf("%c", &student_code);

	switch(student_code){
	case 'a':
		printf("Freshman\n");
		break;
	case 'b':
		printf("Sophomore\n");
		break;
	case 'c':
		printf("Junior\n");
		break;
	case 'd':
		printf("Senior\n");
		break;
	default:
		printf("Unclassified\n");
	}


}