#include <iostream>
#include <string>
#include <regex>

using namespace std;

int main()
{
	// 匹配文件或文件夹
	string str("^[a-zA-Z]:([\\\\/][^\\s\\\\/:*?<>\"|][^\\\\/:*?<>\"|]*)*([/\\\\])?$");
	// 仅匹配文件
	//string str("^[a-zA-Z]:([\\\\/][^\\s\\\\/:*?<>\"|][^\\\\/:*?<>\"|]*)+$");
	string fileName("C:\\s");
	try {
		regex reg(str);
		if (std::regex_match(fileName, reg)) {
			cout << "true" << endl;
		}
		else {
			cout << "false" << endl;
		}
	}
	catch (regex_error e) {
		cout << e.what() << "\ncode: " << e.code();
	}
	
	system("pause");
	return 0;
}