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==Using signal handling==


   
<source lang="cpp">#include <iostream>
#include <iomanip>
#include <signal.h>
#include <stdlib.h>
#include <time.h>
using namespace std;
void signal_handler( int );
int main()
{
   signal( SIGINT, signal_handler );
   srand( time( 0 ) );
   
   for ( int i = 1; i < 101; i++ ) {
      int x = 1 + rand() % 50;
      
      if ( x == 25 )
         raise( SIGINT );
         
   }
   return 0;
}
void signal_handler( int signalValue )
{
   cout << "\nInterrupt signal (" << signalValue
        << ") received.\n"
        << "Do you wish to continue (1 = yes or 2 = no)? ";
   int response;
   cin >> response;
   while ( response != 1 && response != 2 ) {
      cout << "(1 = yes or 2 = no)? ";
      cin >> response;
   }
   
   if ( response == 1 )
      signal( SIGINT, signal_handler );
   else
      exit( EXIT_SUCCESS );
}</source>