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  1. #include <iostream>
  2. #include <array>
  3. #include <numeric>
  4. #include <thread>
  5. #include <mutex>
  6. #include <stdexcept>
  7.  
  8. int TotalSum = 0;
  9. std::mutex mtx;
  10.  
  11. void computeEvenSum(const std::array<int, 20>& data) {
  12.     int localSum = 0;
  13.     for (int num : data) {
  14.         if (num % 2 == 0) {
  15.             localSum += num;
  16.         }
  17.     }
  18.  
  19.     mtx.lock();
  20.     TotalSum += localSum;
  21.     mtx.unlock();
  22. }
  23.  
  24. void computeOddSum(const std::array<int, 20>& data) {
  25.     int localSum = 0;
  26.     for (int num : data) {
  27.         if (num % 2 != 0) {
  28.             localSum += num;
  29.         }
  30.     }
  31.  
  32.     mtx.lock();
  33.     TotalSum += localSum;
  34.     mtx.unlock();
  35. }
  36.  
  37. int main() {
  38.     try {
  39.         std::array<int, 20> numbers;
  40.         std::iota(numbers.begin(), numbers.end(), 1);
  41.  
  42.         std::thread t1(computeEvenSum, std::ref(numbers));
  43.         std::thread t2(computeOddSum, std::ref(numbers));
  44.  
  45.         if (t1.joinable()) t1.join();
  46.         if (t2.joinable()) t2.join();
  47.  
  48.         std::cout << "Final value of TotalSum: " << TotalSum << std::endl;
  49.     } 
  50.     catch (const std::runtime_error& e) {
  51.         std::cerr << "Runtime error: " << e.what() << std::endl;
  52.     }
  53.     catch (const std::exception& e) {
  54.         std::cerr << "Exception: " << e.what() << std::endl;
  55.     }
  56.     catch (...) {
  57.         std::cerr << "Unknown exception caught." << std::endl;
  58.     }
  59.  
  60.     return 0;
  61. }
  62.  
Success #stdin #stdout 0.01s 5280KB
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Standard input is empty
stdout
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Final value of TotalSum: 210
https://ideone.com/bmU7Di
.../lua-eigen/src/matrix.hpp:338: multiple definition of `LuaEigen::Matrix<float, -1, -1>::init(lua_State*)'
CMakeFiles/eigen.dir/src/eigen.cpp.o:.../lua-eigen/src/matrix.hpp:338: first defined here
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

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