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  1. #include <iostream>
  2. #include <future>
  3. int main()
  4. {
  5. std::future<int> empty;
  6.    try {
  7.        int n = empty.get();
  8.    } catch (const std::future_error& e) {
  9.       const std::error_code eCode = e.code();
  10.       char *sValue = (char*)e.what();
  11.       std::cout << "Caught a future_error with code " << eCode.message()
  12.                  << " - what" << sValue << std::endl;
  13.    }
  14. }
  15.  
Success #stdin #stdout 0s 3476KB
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stdin
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Standard input is empty
stdout
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Caught a future_error with code No associated state - whatNo associated state
https://ideone.com/bkXoAM
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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