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  1. #include <iostream>
  2. #include <string>
  3. #include <sstream>
  4.  
  5. struct A
  6. {
  7.     std::string text;
  8. };
  9.  
  10. std::istream& operator>>(std::istream& is, A& a)
  11. {
  12.     return is >> a.text;
  13. }
  14.  
  15. int f(std::string const &s)
  16. {
  17.     A a;
  18.     int b;
  19.     if (std::istringstream{ s } >> a >> b)
  20.     {
  21.         return std::stoi(a.text) + b;
  22.     }
  23.     return 0;
  24. }
  25.  
  26. int main()
  27. {
  28.     std::cout << f("1 2") << std::endl;
  29. }
Success #stdin #stdout 0s 3476KB
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Standard input is empty
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3
https://ideone.com/ZHSGYd
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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