fork(4) download 
  1. #include <iostream>
  2. #include <future>
  3. #include <functional>
  4.  
  5. int main() {
  6.     std::future<int> f;
  7.     {
  8.         std::packaged_task<int()> task([](){return 3; });
  9.         f = task.get_future();
  10.     }
  11.     std::cout<<f.get()<<std::endl;
  12. 	return 0;
  13. }
Runtime error #stdin #stdout #stderr 0s 3480KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
terminate called after throwing an instance of 'std::future_error'
  what():  Broken promise
https://ideone.com/Wt0WOc
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!