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  1. #include <iostream>
  2. #include <chrono>
  3.  
  4. using namespace std;
  5.  
  6. double calc1(const int* a, const int* b) {
  7.  
  8. 	auto start = chrono::system_clock::now();
  9.  
  10. 	int* c = new int[10000000];
  11.  
  12. 	for (int i = 0; i < 10000000; i++)
  13. 		c[i] = a[i] + b[i];
  14.  
  15. 	delete[] c;
  16.  
  17. 	return chrono::duration<double>( chrono::system_clock::now() -start).count();
  18. }
  19.  
  20. double calc2(const int*a, const int*b) {
  21.  
  22. 	auto start = chrono::system_clock::now();
  23.  
  24. 	int* c = new int[10000000];
  25.  
  26. 	delete[] c;
  27.  
  28. 	return chrono::duration<double>(chrono::system_clock::now() - start).count();
  29.  
  30. }
  31.  
  32. int main() {
  33. 	// your code goes here
  34. 	int* a = new int[10000000];
  35. 	int* b = new int[10000000];
  36.  
  37. 	std::cout << calc1(a, b) << '\n' << calc2(a, b);
  38.  
  39. 	delete[] a;
  40. 	delete[] b;
  41. }
Success #stdin #stdout 0.02s 16064KB
comments (?)
stdin 
Standard input is empty
stdout 
0.0222257
1.0411e-05
https://ideone.com/mqCLqO
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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