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  1. #include <iostream>
  2. #include <chrono>
  3.  
  4. int main()
  5. {
  6.     ulong k = 0;
  7.     auto start = std::chrono::high_resolution_clock::now();
  8.     for( uint i = 0; i < 1000000; ++i )
  9.     {
  10.         k++;
  11.     }
  12.     auto diff = std::chrono::high_resolution_clock::now() - start;
  13.     auto t1 = std::chrono::duration_cast<std::chrono::nanoseconds>(diff);
  14.     std::cout << "k = " << k << std::endl;
  15.  
  16.     k = 0;
  17.     start = std::chrono::high_resolution_clock::now();
  18.     for( uint i = 0; i < 1000; ++i )
  19.     {
  20.         for( uint j = 0; j < 1000; ++j )
  21.         {
  22.             k++;
  23.         }
  24.     }
  25.     diff = std::chrono::high_resolution_clock::now() - start;
  26.     auto t2 = std::chrono::duration_cast<std::chrono::nanoseconds>(diff);
  27.     std::cout << "k = " << k << std::endl;
  28.  
  29.     std::cout << "Simple: " << t1.count() << std::endl;
  30.     std::cout << "Double: " << t2.count() << std::endl;
  31. }
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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k = 1000000
k = 1000000
Simple: 324
Double: 204
https://ideone.com/oze4V7
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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