1   // Fig. 18.4: fig18_04.cpp
2   // Using the exit and atexit functions 
3   #include <iostream.h>
4   #include <stdlib.h>
5   
6   void print( void );
7   
8   int main()
9   {
10     atexit( print );       // register function print 
11     cout << "Enter 1 to terminate program with function exit" 
12          << "\nEnter 2 to terminate program normally\n";
13  
14     int answer;
15     cin >> answer;
16  
17     if ( answer == 1 ) {
18        cout << "\nTerminating program with function exit\n";
19        exit( EXIT_SUCCESS );
20     }
21  
22     cout << "\nTerminating program by reaching the of main"
23          << endl;
24  
25     return 0;
26  }
27  
28  void print( void )
29  {
30     cout << "Executing function print at program termination\n"
31          << "Program terminated" << endl;
32  }