print_typename c++ sample

print_typename.cpp

#include <typeinfo>
#if defined __GNUC__
#include <cxxabi.h>                     // GCC / Clang only
#endif
#include <string>

std::string type_name_to_full_name(const char* name) {
    char * n = abi::__cxa_demangle(name, 0, 0, 0);
    std::string s{n};
    free(n);
    return s;
}

#include <iostream>

int main() {
    {
        int i{2};
        std::cout << "Typeid name: "<< type_name_to_full_name(typeid(&i).name()) << std::endl;
    }
    return 0;
}