Yurttas/PL/OOL/Cplusplus/F/06/02/00/01/io gs 00.cpp

 1/*
 2   Copyright(C) 1998
 3   All Rights Reserved. Salih Yurttas, ZCubes, BitsOfCode Software Systems, Inc..
 4
 5   Permission to use, copy, modify, and distribute this
 6   software and its documentation for EDUCATIONAL purposes
 7   and without fee is hereby granted provided that this
 8   copyright notice appears in all copies.
 9
10   date   : January 1, 1998.
11   author : Salih Yurttas.
12
13   io_gs_00.cpp
14*/
15
16
17#include <iostream>
18#include <fstream>
19
20#include <vector>
21#include <string>
22
23using namespace std;
24
25void double_space(ifstream& in_file,
26                  ofstream& out_file) {
27  vector<string> s;
28  string t;
29
30  while(getline(in_file,t,'\n')) {
31    s.push_back(t);
32    out_file << t << endl;
33  }
34  out_file << endl << endl;
35
36  int n = s.size();
37  for(int i=0; i<n; ++i)
38    out_file << s.at(i) << endl << endl;
39}
40
41
42int main(int argc, char* argv[]) {
43
44  if(argc != 3 ) {
45    cout << "\nUsage: " << argv[0]
46         << " infile outfile\n";
47    exit(1);
48  }
49
50  ifstream f_in(argv[1]);
51  ofstream f_out(argv[2]);
52
53  if(!f_in) {
54    cerr << "cannot open " << argv[1];
55    exit(1);
56  }
57
58  if(!f_out) {
59    cerr << "cannot open " << argv[2];
60    exit(1);
61  }
62
63  double_space(f_in,
64               f_out);
65
66}