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Convert numeric type to String

/ Published in: C++
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  1. #include <string>
  2. #include <sstream>
  3. #include <iostream>
  4.  
  5. template <class T>
  6. std::string to_string(T t, std::ios_base & (*f)(std::ios_base&))
  7. {
  8.   std::ostringstream oss;
  9.   oss << f << t;
  10.   return oss.str();
  11. }
  12.  
  13. int main()
  14. {
  15.   // the second parameter of to_string() should be one of 
  16.   // std::hex, std::dec or std::oct
  17.   std::cout<<to_string<long>(123456, std::hex)<<std::endl;
  18.   std::cout<<to_string<long>(123456, std::oct)<<std::endl;
  19.   return 0;
  20. } 
  21.  
  22. /* output:
  23. 1e240
  24. 361100
  25. */

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