# include <stdio.h>

void main(void){
	char letter;

	printf(" Enter color: ");
	scanf("%c",&letter);


	if (letter=='o' || letter=='O')
		printf(" Chemical is ammonia\n");

	if (letter=='b' || letter=='B')
		printf(" Chemical is carbon monoxide\n");

	if (letter=='y' || letter=='Y')
		printf(" Chemical is hydrogen\n");
	else
		printf(" Chemical not found\n");



}