Yurttas/PL/OOL/Cplusplus/F/06/01/io 10.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_10.cpp
14*/
15
16
17#include <iostream>
18
19#include <fstream>
20
21using namespace std;
22
23void double_space(ifstream& i_f,
24                  ofstream& o_f) {
25  char c;
26
27  while(i_f.get(c)) {
28    o_f.put(c);
29    if(c=='\n') 
30      o_f.put(c);
31  }
32}
33
34
35int main(int argc, char* argv[]) {
36
37  if(argc != 3 ) {
38    cout << "\nUsage: " << argv[0]
39         << " infile outfile\n";
40    exit(1);
41  }
42
43  ifstream f_in(argv[1]);
44  ofstream f_out(argv[2]);
45
46  if(!f_in) {
47    cerr << "cannot open " << argv[1];
48    exit(1);
49  }
50
51  if(!f_out) {
52    cerr << "cannot open " << argv[2];
53    exit(1);
54  }
55
56  double_space(f_in,
57               f_out);
58
59}