measuring printing-performance

main.cpp

#include <algorithm>
#include <string>
#include <vector>
#include <fstream>
#include <iterator>
#include <iostream>

#include <utilities/timer.hpp>

int main() {
	auto vec = std::vector<unsigned>(100000);
	std::iota(vec.begin(), vec.end(), 0);
	std::ofstream results{"results.txt"};
	for(unsigned i = 0; i < 100; ++i) {
		{
			auto timer = util::timer{};
			timer.start();
			for(auto val: vec) {
				std::cout << val << " ";
			}
			std::cout << std::endl;
			timer.stop();
			results << "1  " << timer.ticks() << '\n';
		}
		{
			auto timer = util::timer{};
			timer.start();
			std::copy(vec.begin(), vec.end(), std::ostream_iterator<unsigned>{std::cout, " "});
			std::cout << std::endl;
			timer.stop();
			results << "2  " << timer.ticks() << '\n';
		}
		{
			auto timer = util::timer{};
			timer.start();
			for(auto val: vec) {
				std::printf("%u ", val);
			}
			std::printf("\n");
			timer.stop();
			results << "3  " << timer.ticks() << '\n';
		}
	}
}