1   // Fig. 14.11: clntdata.h
2   // Definition of struct clientData used in 
3   // Figs. 14.11, 14.12, 14.14 and 14.15.
4   #ifndef CLNTDATA_H
5   #define CLNTDATA_H
6   
7   struct clientData {
8      int accountNumber;
9      char lastName[ 15 ];
10     char firstName[ 10 ];
11     float balance;
12  };
13  
14  #endif
15  
16  
17  // Fig. 14.11: fig14_11.cpp
18  // Creating a randomly accessed file sequentially
19  #include <iostream.h>
20  #include <fstream.h>
21  #include <stdlib.h>
22  #include "clntdata.h"
23  
24  int main()
25  {
26     ofstream outCredit( "credit.dat", ios::out );
27  
28     if ( !outCredit ) {
29        cerr << "File could not be opened." << endl;
30        exit( 1 );
31     }
32  
33     clientData blankClient = { 0, "", "", 0.0 };
34  
35     for ( int i = 0; i < 100; i++ )
36        outCredit.write( 
37           reinterpret_cast<const char *>( &blankClient ), 
38           sizeof( clientData ) );
39     return 0;
40  }