/*
VIM: let b:lcppflags="-std=c++14 -O2 -pthread -I."
VIM: let b:wcppflags="/O2 /EHsc /DWIN32"
VIM-: let b:cppflags=g:Iboost.g:Itbb
VIM-: let b:ldflags=g:Lboost.g:Ltbb
VIM-: let b:ldlibpath=g:Bboost.g:Btbb
VIM-: let b:argv=""
*/
#include <iostream>
#include <exception>
#include <chrono>
#include <stdexcept>

void print_exception()
{
    try {
        std::rethrow_exception(std::current_exception());
    } catch ( const std::exception& e ) {
        std::cout << e.what() << std::endl;
    }
}

int main ( void )
{try{
    auto begin = std::chrono::high_resolution_clock::now();

    try {
        throw std::runtime_error("first exception");
    } catch(...) {
        try {
            throw std::runtime_error("second exception");
        } catch (...) {
            print_exception();
        }
        print_exception();
    }

    //......

    auto end = std::chrono::high_resolution_clock::now();
    std::chrono::duration<double> seconds = end - begin;
    std::cout << "Time: " << seconds.count() << std::endl;
    return 0;
}
catch ( const std::exception& e )
{
    std::cerr << std::endl
            << "std::exception(\"" << e.what() << "\")." << std::endl;
    return 2;
}
catch ( ... )
{
    std::cerr  << std::endl
            << "unknown exception." << std::endl;
    return 1;
}}