//A demonstration of prefix and postfix operators.
 // demonstrates use of
 // prefix and postfix increment and
 // decrement operators
  #include <iostream.h>
 int main()
 {
 int myAge = 39; // initialize two integers
 int yourAge = 39;
 cout << "I am: " << myAge << " years old.\n";
 cout << "You are: " << yourAge << " years old\n";
 myAge++; // postfix increment
 ++yourAge; // prefix increment
 cout << "One year passes...\n";
 cout << "I am: " << myAge << " years old.\n";
 cout << "You are: " << yourAge << " years old\n";
 cout << "Another year passes\n";
 cout << "I am: " << myAge++ << " years old.\n";
 cout << "You are: " << ++yourAge << " years old\n";
 cout << "Let's print it again.\n";
 cout << "I am: " << myAge << " years old.\n";
 cout << "You are: " << yourAge << " years old\n";
 return 0;
 }