1 /************************************************
  2  * copy -- Copy the input file to the output    *
  3  *      file.                                   *
  4  ************************************************/
  5 #include <cstdio>
  6 #include <iostream>
  7 #include <fstream>
  8
  9 /************************************************
 10  * copy_it -- Copy the data                     *
 12 void copy_it(
 13     FILE *in_file,      // Input file
 14     std::ostream &out_file   // Output file
 15 )
 16 {
 17     int ch;      // Current char
 18
 19     while (1) {
 20         ch = std::fgetc(in_file);
 21         if (ch == EOF)
 22             break;
 23         out_file << ch;
 24     }
 25 }
 26
 27 int main()
 28 {
 29     // The input file
 30     FILE *in_file = std::fopen("in.txt", "r");
 31     // The output file
 32     std::ofstream out_file("out.txt");
 33
 34     // Check for errors
 35     if (in_file == NULL) {
 36         std::cerr <<
 37             "Error: Could not open input\n";
 38         exit (8);
 39     }
 40     if (out_file.bad()) {
 41         std::cerr <<
 42             "Error: Could not open output\n";
 43         exit (8);
 44     }
 45     // Copy data
 46     copy_it(in_file, out_file);
 47
 48     // Finish output file
 49     std::fclose(in_file);
 50     return (o);
 51 }