// Listing 4.2 - demonstrates subtraction and
// integer overflow
#include <iostream>
  
int main()
{
   using std::cout;
   using std::endl;
  
   unsigned int difference;
   unsigned int bigNumber = 100;
   unsigned int smallNumber = 50;

   difference = bigNumber - smallNumber;
   cout << "Difference is: " << difference;

   difference = smallNumber - bigNumber;
   cout << "\nNow difference is: " << difference <<endl;

   system("PAUSE");  // prevent the console window from closing
   return 0;
}