#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 256

int main()
{
	char food[N];

	printf("What would you like to eat? ");
	if (fgets(food, N, stdin) != food) {
		printf("End of input encountered.\n");
		return EXIT_FAILURE;
	}

	printf("You can't eat that--");

	if (strstr(food, "sugar") == NULL) {
		printf("it turns to sugar in your stomach!\n");
	} else {
		printf("it has sugar in it!\n");
	}

	return EXIT_SUCCESS;
}