fork(10) download 
  1. #include <iostream>
  2. #include <sstream>
  3.  
  4. std::stringstream::pos_type size_of_stream(const std::stringstream& ss)
  5. {
  6.     std::streambuf* buf = ss.rdbuf();
  7.  
  8.     // Get the current position so we can restore it later
  9.     std::stringstream::pos_type original = buf->pubseekoff(0, ss.cur, ss.out);
  10.  
  11.     // Seek to end and get the position
  12.     std::stringstream::pos_type end = buf->pubseekoff(0, ss.end, ss.out);
  13.  
  14.     // Restore the position
  15.     buf->pubseekpos(original, ss.out);
  16.  
  17.     return end;
  18. }
  19.  
  20. int main()
  21. {
  22.     std::stringstream ss;
  23.  
  24.     ss << "Hello";
  25.     ss << ' ';
  26.     ss << "World";
  27.     ss << 42;
  28.  
  29.     std::cout << size_of_stream(ss) << std::endl;
  30.  
  31.     // Make sure the output string is still the same
  32.     ss << "\nnew line";
  33.     std::cout << ss.str() << std::endl;
  34.  
  35.     std::string str;
  36.     ss >> str;
  37.     std::cout << str << std::endl;
  38. }
Success #stdin #stdout 0s 3428KB
comments (?)
stdin 
Standard input is empty
stdout 
13
Hello World42
new line
Hello
https://ideone.com/Xvkhr3
language:
C++14 (gcc 8.3)
created:
10 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!