Timer.cpp

#include <iostream>
#include <chrono>

struct Timer {																							//use object lifetime to automatically print time elapsed
																														//within scope
																														//timepoints
	std::chrono::time_point<std::chrono::steady_clock> begin, end;
	//used to find change in time
	std::chrono::duration<double> duration;

	Timer()
	{
		//set begin time upon instantiation
		begin = std::chrono::high_resolution_clock::now();
	}


	~Timer()
	{
		//find difference between beginning and end
		end = std::chrono::high_resolution_clock::now();
		duration = end - begin;

		//std::fixed means keep the decimal point
		//print time
		std::cout << std::fixed << "Time elapsed: " << duration.count() << "\n";

	}
};

int main()
{
	{	//create a new scope so timer destructor is called
		Timer timer;
		std::cout << "Hello World" << std::endl;
	}	//when this curly brace is found the timer object is destroyed

	std::cin.get();
}