#include <stdio.h>

int main(void) {
	
	/* constants */
	#define ON 1
	#define OFF 0
	
	int light_switch = ON;  /* simulates a light switch */
	
	/* Check to see if the lights are on */
	if (light_switch)
	    printf ("The Lights are ON\n");
	    
	switch (light_switch)
    {
        case ON:
            printf("The Lights are ON\n");
            break;
        case OFF:
            printf("The Lights are OFF\n");
            break;

    } /* switch */
	    
	return 0;
}