// splits a string according to delimiter.
vector<string> split(string toTokens, char delim) {
	vector<string> tokenArray;
	char c;
	string tmpWord;
	for (int i = 0; i < (signed) toTokens.length(); i++) {
		c = toTokens.at(i);
		if (c == delim) {
			(tokenArray).push_back(tmpWord);
			tmpWord = "";
		} else 
			tmpWord.push_back(c);

	}
	if (tmpWord != "")
		(tokenArray).push_back(tmpWord);
	return tokenArray;
}