string - Handling Non-Ascii Chars in C++ -

i facing issues non-ascii chars in c++. have 1 file containg non-ascii chars reading in c++ via file handling. after reading file(say 1.txt) storing data string stream , writing file(say 2.txt).

assume 1.txt contains:

ação 

in 2.txt should same ouyput non-ascii chars printed hex value in 2.txt.

also, quite sure c++ handling ascii chars ascii only.

please on how print these chars correctly in 2.txt

edit:

firstly psuedo-code whole process:

1.shell script read db 1 value , stores in 11.txt 2.cpp code(a.cpp) reading 11.txt , writing f.txt 

data present in db being read: instalação

file 11.txt contains: instalação

file f.txt contains: instalação

ouput of a.cpp on screen: instalação

a.cpp

#include <iterator> #include <iostream> #include <algorithm> #include <sstream> #include<fstream> #include <iomanip>  using namespace std; int main() {     ifstream myreadfile;     ofstream f2;     myreadfile.open("11.txt");     f2.open("f2.txt");     string output;     if (myreadfile.is_open())      {         while (!myreadfile.eof())         {             myreadfile >> output;                 //cout<<output;              cout<<"\n";              std::stringstream tempdummylineitem;             tempdummylineitem <<output;             cout<<tempdummylineitem.str();             f2<<tempdummylineitem.str();         }     }     myreadfile.close();     return 0; } 

locale says this:

lang=en_us.utf-8 lc_ctype="en_us.utf-8" lc_numeric="en_us.utf-8" lc_time="en_us.utf-8" lc_collate="en_us.utf-8" lc_monetary="en_us.utf-8" lc_messages="en_us.utf-8" lc_paper="en_us.utf-8" lc_name="en_us.utf-8" lc_address="en_us.utf-8" lc_telephone="en_us.utf-8" lc_measurement="en_us.utf-8" lc_identification="en_us.utf-8" lc_all= 

at least if understand you're after, i'd this:

#include <iterator> #include <iostream> #include <algorithm> #include <sstream> #include <iomanip>  std::string to_hex(char ch) {     std::ostringstream b;     b << "\\x" << std::setfill('0') << std::setw(2) << std::setprecision(2)         << std::hex << static_cast<unsigned int>(ch & 0xff);     return b.str(); }  int main(){     // test purposes, we'll use stringstream input     std::stringstream infile("normal stuff. weird stuff:\x01\xee:back normal");      infile << std::noskipws;      // copy input output, converting non-ascii hex:     std::transform(std::istream_iterator<char>(infile),         std::istream_iterator<char>(),         std::ostream_iterator<std::string>(std::cout),         [](char ch) {             return (ch >= ' ') && (ch < 127) ?                 std::string(1, ch) :                 to_hex(ch);     }); }