wandbox_bench.cpp

// https://wandbox.org/permlink/DnmwABiHeYne8Iaz
#include <iostream>
#include <cstdlib>
#include <boost/timer/timer.hpp>

int main()
{
    const long n=10000000;
    {
        boost::timer::cpu_timer timer;

        for (long i = 0; i < n; ++i) {
        // DO 1
        }

        std::string result = timer.format();
        std::cout << result << std::endl;
    }
    {
        boost::timer::cpu_timer timer;

        for (long i = 0; i < n; ++i) {
        // DO 2
        }
        
        std::string result = timer.format();
        std::cout << result << std::endl;
    }
}