///////////////////////////////////////////////////////////////
//  lineno.cpp - prepend line numbers to source code lines   //
//                                                           //
//  Language:    Visual C++, ver 5.0                         //
//  Platform:    Micron Dual Pentium 200                     //
//               Windows NT, ver 4.0, service pack 3         //
//  Application: Demonstration for ECS500                    //
//  Author:      Jim Fawcett, CST 2-187, (315) 443-3948      //
//               fawcett@neptune.syr.edu                     //
///////////////////////////////////////////////////////////////
//  Use:                                                     //
//  lineno file1.h file*.cpp >lineno.out                     //
///////////////////////////////////////////////////////////////
//  Build Process:                                           //
//  I:\FAWCETT\setenv                                        //
//  cl -GX lineno.cpp /link setargv.obj                      //
//                                                           //
//  ver 1.1 - 7 June 98                                      //
//  - fixed bug in inner-most loop by checking for bad       //
//    stream state should end of file be reached             //
///////////////////////////////////////////////////////////////

#include <iostream>
#include <fstream>

using namespace std;

void main(int argc, char *argv[]) {

  ifstream in;
  int i;

// step through each of command line arguments after 0th
  for(i=1; i<argc; i++) {
    in.open(argv[i]);             // open a stream attached to file
    if(!in.good()) {
      cout << "  can't open file " << argv[i] << endl;
      continue;
    }

  // start counting lines
    int count = 0;
    cout.setf(ios::left,ios::adjustfield);
    do {
      cout.width(4);                
      cout << ++count << " ";     // send out count
      char ch;
      do {
        in.get(ch);
        cout.put(ch);             // send out line character
      } while(in.good() && ch != '\n');
                                  // until end of line
    } while(in.good());           // go until end of file
    cout << endl;
    in.close();                   // close file so we can open another
    in.clear();                   // reset in stream to good state
  }
}