#include <iostream>
#include <iomanip>
 
using namespace std;
 
int main() {
    unsigned long address = 0;
    char c;
 
    cout << hex << setfill('0');
    while( cin.good() )
    {
        int nread;
        char buf[16];
 
        for( nread = 0; nread < 16 && cin.get(buf[nread]); nread++ );
        if( nread == 0 ) break;
 
        // Show the address
        cout << setw(8) << address;
 
        // Show the hex codes
        for( int i = 0; i < 16; i++ )
        {
            if( i % 8 == 0 ) cout << ' ';
	        if( i < nread )
                cout << ' ' << setw(2) << (unsigned)buf[i];
            else 
                cout << "   ";
        }
 
        cout << "  ";
        for( int i = 0; i < nread; i++)
        {
            if( buf[i] < 32 ) cout << '.';
            else cout << buf[i];
        }
 
        cout << "\n";
        address += 16;
    }
	return 0;
}

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

SGVsbG8gdGhlcmUsIHRoaXMgaXMgYSB0ZXN0IGJpbmFyeSBmaWxlLgpXaGF0IGRvIHlvdSB0aGluaz8KCi4=

Hello there, this is a test binary file.
What do you think?

.