Read and display binary data : istrstream « File Stream « C++ Tutorial

1. C++ Tutorial
2. File Stream
3. istrstream

#include <iostream>
#include <strstream>
using namespace std;

int main()
{
  char *p = "this is a test\1\2\3\4\5\6\7";

  istrstream ins(p);

  char ch;

  
  while (!ins.eof()) {
    ins.get(ch);
    cout << hex << (int) ch << ' ';
 
 }
  return 0;
}

74 68 69 73 20 69 73 20 61 20 74 65 73 74 1 2 3 4 5 6 7 7 "