#include <iostream>
 #include <sstream>
 #include <fstream>
 #include <string>
 #include <vector>
 using namespace std;

 int main()
 {

     ifstream ifd("C:\Users\", ios::binary | ios::ate);
     int size = ifd.tellg();
     ifd.seekg(0, ios::beg);
     vector<char> buffer;
     buffer.resize(size);
     ifd.read(buffer.data(), size);


     const int N = 16;
     const char hex[] = "0123456789ABCDEF";

     char buf[N*4+5+2];

     for (int i = 0; i < buffer.size(); ++i)
     {
         int n = i % N;
         if (n == 0)
         {
             if (i)
                 puts(buf);
             memset(buf, 0x20, sizeof(buf));
             buf[sizeof(buf) - 2] = 'n';
             buf[sizeof(buf) - 1] = '';

         }
         unsigned char c = (unsigned char)buffer[i];

         buf[n*3+0] = hex[c / 16];
         buf[n*3+1] = hex[c % 16];

         buf[3*N+5+n] = (c>=' ' && c<='~') ? c : '.';
     }
     puts(buf);


 }