naive implementation of cat (without pipes)

cat.cpp

#include <string>
#include <fstream>
#include <streambuf>
#include <iostream>

int main(int argc, char** argv) {
  if(argc < 2) {
    std::cerr << "cat: Pass me a file\n";
    return 2;
  }

  std::string file_name(argv[1]);
  std::ifstream file_handle;
  file_handle.exceptions(std::ifstream::failbit | std::ifstream::badbit);
  try {
    file_handle.open(file_name.c_str());
    std::string file_contents((std::istreambuf_iterator<char>(file_handle)), 
                               std::istreambuf_iterator<char>());
    std::cout << file_contents;
  }
  catch(const std::exception& e) {
    std::cerr << "cat: " << file_name << ": " << e.what() << std::endl;
    return 2;
  }

  return 0;
}