Thread: Repeating a simple calculation

Code:

//File name: PP1Ch2-cereal-weight
//Description: a) A program to weight in ounces and output it in tons.
//             b) The number of boxes needed to yield a ton of cereal.
//Last update: 21/7/2003


#include <iostream.h>
#include <stdlib.h>

int main()
{
      cout.setf(ios::fixed);
      cout.setf(ios::showpoint);
      cout.precision(4);

      double package_weight, package_weight_ton,
             number_of_packages;

      cout << "Enter the weight of a cereal package in ounces: ";
      cin  >> package_weight;

      // A ton is 35723.92 oz.

      package_weight_ton = package_weight / 35273.92;
      number_of_packages = 1 / (package_weight / 35273.92);

      cout << "The weight of the package in tons is: " << package_weight_ton << " tons.\n";

      cout.precision(1);

      cout << "A number of " << number_of_packages << " packages are needed to satisfy a ton of cereal.\n";

      system("PAUSE");
      return 0;
}

I'm doing this question which asks that the program above allows a user to repeat this calculation as often as a user wishes.

That's instead of press any key to continue and then the program exits, the program should prompt again for user input when the user presses a key to continue.

Do I need to use if-else statements here? If so where should I put them?

Thanx.