// This program demonstrates the ++ and -- operators.
#include <iostream>
using namespace std;

int main()
{
   int num = 4;   // num starts out with 4.
   
   // Display the value in num.
   cout << "The variable num is " << num << endl;
   cout << "I will now increment num.\n\n";
   
   // Use postfix ++ to increment num.
   num++;
   cout << "Now the variable num is " << num << endl;
   cout << "I will increment num again.\n\n";

   // Use prefix ++ to increment num.
   ++num;
   cout << "Now the variable num is " << num << endl;
   cout << "I will now decrement num.\n\n";
   
   // Use postfix -- to decrement num.
   num--;
   cout << "Now the variable num is " << num << endl;
   cout << "I will decrement num again.\n\n";
   
   // Use prefix -- to increment num.
   --num;
   cout << "Now the variable num is " << num << endl;
   return 0;
}