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  1. #include <iostream>
  2. #include <thread>
  3. #include <chrono>
  4. #include <algorithm>
  5. using namespace std;
  6. using namespace std::chrono;
  7. typedef long long int  ull;
  8.  
  9. void findEven(ull start, ull end, ull* EvenSum) {
  10. 	for (ull i = start; i <= end; ++i){
  11. 		if (!(i & 1)){
  12. 			*(EvenSum) += i;
  13. 		}
  14. 	}
  15. }
  16.  
  17. void findOdd(ull start, ull end, ull* OddSum) {
  18. 	for (ull i = start; i <= end; ++i){
  19. 		if (i & 1){
  20. 			(*OddSum) += i;
  21. 		}
  22. 	}
  23. }
  24.  
  25. int main() {
  26.  
  27. 	ull start = 0, end = 1900000000;
  28.  
  29. 	ull OddSum = 0;
  30. 	ull EvenSum = 0;
  31.  
  32.     auto startTime = high_resolution_clock::now(); 
  33.  
  34. 	// // WITH THREAD
  35.     std::thread t1(findEven, start, end, &(EvenSum));
  36.     std::thread t2(findOdd, start, end, &(OddSum));
  37.  
  38. 	t1.join();
  39. 	t2.join();
  40.  
  41. 	// // WITHOUT THREAD
  42. 	// findEven(start,end, &EvenSum);
  43. 	// findOdd(start, end, &OddSum);
  44.     auto stopTime = high_resolution_clock::now(); 
  45.     auto duration = duration_cast<microseconds>(stopTime - startTime);
  46.  
  47. 	cout << "OddSum : " << OddSum << endl;
  48. 	cout << "EvenSum : " << EvenSum << endl;
  49.  
  50. 	cout << "Sec: " << duration.count()/1000000 << endl;
  51.  
  52. 	return 0;
  53. }
Success #stdin #stdout 3.3s 5284KB
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stdin
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Standard input is empty
stdout
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OddSum : 902500000000000000
EvenSum : 902500000950000000
Sec: 3
https://ideone.com/5oThVJ
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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