UNIX Utilities IV: cat

This is probably one of the most useful commands on any UNIX system, it almost becomes a third arm for most users, essential for navigating a world where everything is a file.

/**
 * A copy of the "cat" command on UNIX, missing a few options, but it
 * does what is normally asked of it (reading files).
 * 
 * About 1/4 the size of the GNU one without stripping.
 * 
 * Copyright 2012-01-25 Joseph Lewis
 */
#include <iostream>
#include <fstream>
#include <string.h>
#include <stdio.h>
using namespace std;

int main(int nargs, char* vargs[])
{
 // General help behaviour.
 if(strcmp(vargs[0],"--help") == 0 || strcmp(vargs[0], "-h") == 0)
 {
  cout << "Usage: " << vargs[0] << " filename [filename ...]" << endl;
  cout << "\tPrints the contents of the given file(s)" << endl;
  return 1;
 }
 
 // If the only arg is the program name, read from stdin.
 if(nargs == 1)
 {
  while(cin.good())
  {
   string line;
   getline(cin,line);
   cout << line << endl;
  }
  
  return 0;
 }
 
 // If the program has args, try to read the files.
 for(int i = 1; i < nargs; i++)
 {
  string line;
  ifstream myfile;
  myfile.open (vargs[i]);
  
  if(myfile.bad() || myfile.fail())
  {
   cout << "cat: "<< vargs[i] << ": No such file or directory" << endl;
  }

  while ( myfile.good() )
  {
   getline (myfile,line);
   cout << line << endl;
  }
  myfile.close();
 }
 return 0;
}