//A demonstration of subtraction and integer overflow.
 // demonstrates subtraction and
 // integer overflow
  #include <iostream.h>

 int main()
 {
 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 <