C++ Tutorial/Development/exit

#include <iostream>
#include <stdlib.h>
using namespace std;
void print( void );
int main()
{
   atexit( print );       // register function print 
   cout << "Enter 1 to terminate program with function exit" 
        << "\nEnter 2 to terminate program normally\n";
   int answer;
   cin >> answer;
   if ( answer == 1 ) {
      cout << "\nTerminating program with function exit\n";
      exit( EXIT_SUCCESS );
   }
   cout << "\nTerminating program by reaching the of main"
        << endl;
   return 0;
}
void print( void )
{
   cout << "Executing function print at program termination\n"
        << "Program terminated" << endl;
}