#include <chrono>
#include <iostream>
#include <thread>
 
typedef std::chrono::steady_clock::time_point clock_point;
 
int main()
{
	using namespace std::chrono_literals;
	for ( int i = 0; i < 30; i++ ) {
 
	    clock_point start_overall = std::chrono::steady_clock::now();
 
	    std::this_thread::sleep_for(100ms);
 
	    clock_point end_phase_1 = std::chrono::steady_clock::now();
 
	    std::cout << "DIFF=" << std::chrono::duration_cast<std::chrono::microseconds>( end_phase_1 - start_overall ).count() << "\n";
	}
}

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