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  1.     #include <string>
  2.     #include <algorithm>
  3.     #include <iostream>
  4.     #include <ostream>
  5.  
  6.     class StringConverter
  7.     {
  8.         char *str; // TODO: use smart pointer with right deleter
  9.     public:
  10.         StringConverter(const std::string &user_string) // Will be defined only at user side
  11.         {
  12.             str=new char[user_string.length()+1];
  13.             (*(std::copy(user_string.begin(),user_string.end(),str)))=0;
  14.         }
  15.         operator std::string() // Will be defined only at library side
  16.         {
  17.             return std::string(str);
  18.         }
  19.         ~StringConverter()
  20.         {
  21.             delete [] str;
  22.         }
  23.     };
  24.  
  25.     StringConverter foo()
  26.     {
  27.         return std::string("asd");
  28.     }
  29.  
  30.  
  31.     int main(int argc,char *argv[])
  32.     {
  33.         std::cout << std::string(foo()) << std::endl;
  34.         return 0;
  35.     }
  36.  
Success #stdin #stdout 0.01s 2812KB
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Standard input is empty
stdout
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asd
https://ideone.com/EfcKv
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
secret

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