getcommand.c

int cmp_for_sort(const void * c1, const void * c2){
    return strcmp(*(char **) c1, *(char **) c2);
}

int cmp_for_search(const void * c1, const void * c2){
    return strcmp((char *) c1, *(char **) c2);
}

int
getCommand()
{
	int c;
	int i = 0;
	char buffer[150];
	char *validCommands[] = {"bomb", "quit", "save"};
	qsort(validCommands, 3, sizeof(char *), cmp_for_sort);
	
	printf("=> ");
	while ((c = getchar()) != EOF && c != '\n') {
		buffer[i++] = c;
	}
	buffer[i] = '\0';
	return bsearch(buffer, validCommands, 3, sizeof(char *), cmp_for_search) != NULL;

}

int
main(void)
{
	int c;
 	c = getCommand();
	printf("%d\n", c);
	return 0;
}