#include <iostream>
#include <cstring>
#include <regex>
 
using namespace std;
 
int main () {
    std::string str1 = "a/b/c[2]/d";
    std::string str2 = R"regex((.*)a/b/c[2]/d(.*))regex";
    // std::string str2 = "(.*)a/b/c[2]/d(.*)";
    std::regex e(str2);
 
    std::cout << "str1 = " << str1 << std::endl;
    std::cout << "str2 = " << str2 << std::endl;
    if (regex_match(str1, e)) {
        std::cout << "matched" << std::endl;
    }
}
 

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