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  1. #include <iostream>
  2. #include <future>
  3. #include <chrono>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	auto start = chrono::system_clock::now();
  8. 	auto f = async(launch::async, [=](){
  9. 		this_thread::sleep_for(chrono::seconds(3));
  10. 	});
  11. 	chrono::duration<double> diff = chrono::system_clock::now() - start;
  12. 	cout << "Elapsed " << diff.count() << " seconds" << endl;
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 4360KB
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Standard input is empty
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Elapsed 1.6499e-05 seconds
https://ideone.com/VaBhXA
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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