/*
 *  simulator.c
 *  
 *
 *  Created by xwu3 on 3/1/09.
 *  Copyright 2009 University of Iowa. All rights reserved.
 *
 */

#include<stdio.h>


void IllumateRedBulb(int A, int B);
void IllumateBlueBulb(int A, int B, int C);
void IllumateGreenBulb(int A);

int main (void)
{
	int switch1 = 0, switch2 = 0, switch3 = 0, switch4 = 0, switch5 = 0, switch6 = 0;
	int input;

	
	do {
		printf("\n\n\nEnter a switch to close.\n");  /* Print menu */
		printf("\t1: Switch One\n");
		printf("\t2: Switch Two\n");
		printf("\t3: Switch Three\n");
		printf("\t4: Switch Four\n");
		printf("\t5: Switch Five\n");
		printf("\t6: Switch Six\n");
		printf("\t-1: Exit\n");
		
		scanf("%d", &input);
		
		switch (input) {  /* close the switch */
			case 1: 
				switch1 = 1;
				break;
				
			case 2:
				switch2 = 1;
				break;
			
			case 3:
				switch3 = 1;
				break;
				
			case 4:
				switch4 = 1;
				break;
				
			case 5:
				switch5 = 1;
				break;
				
			case 6:
				switch6 = 1;
				break;
				
			case -1:
				break;
				
			default:
				printf("Invalid switch.\n");
				break;
		}
		
		if (input != -1) {   /* simulate the logical circuit */
			IllumateRedBulb(switch1, switch2);
			IllumateBlueBulb(switch3, switch4, switch5);
			IllumateGreenBulb(switch6);
		}
	} while (input != -1);
		
	return 0;
}
	


void IllumateRedBulb(int A, int B)  /* Illumate Red Bulb */
{
	if (A && B)
		printf("Red\n");
}

void IllumateBlueBulb(int A, int B, int C)  /* Illumate Blue Bulb */
{
	int xorA;
	int blueBulb;
	
	xorA = A || B;
	blueBulb = (!xorA && C) || (xorA && !C);
	if (blueBulb)
		printf("Blue\n");
}

void IllumateGreenBulb(int A)  /* Illumate Green Bulb */
{
	if (A)
		printf("Green\n");
}