char *fgets(char *s, int n, FILE *stream)
{
	size_t index = 0;
	while (index < (n - 1))
	{
		int character = fgetc(stream);
		
		// EOF or error and nothing read?
		if (character == EOF && index == 0)return NULL;
		// EOF or error?
		else if (character == EOF)goto success;
		
		s[index] = (char)character;
		++index;
		
		// newline?
		if ((char)character == '\n')goto success;
	}
	
	success:
		s[index] = '\0';
		return s;
}