// Program switches demonstrates the use of the Switch
// statement.

#include <iostream>
using namespace std;

int main ()
{
    char  letter;
    int  first;
    int  second;
    int  answer;

    cout  << "Enter an A for addition or an S for"
          << " subtraction, followed by two integer "  << endl
          << " numbers.  Press return.  Enter a Q to quit."  
          << endl;
    cin  >> letter;
    while (letter != 'Q')
    {
         cin  >> first  >> second;

       switch (letter)
       {
            case 'A' : answer = (first + second);
                       cout << first  << " + "  << second
                            << " is "  << answer  << endl;
                       break;
            case 'S' : answer = (first - second);
		               cout << first  << " - "  << second
			              << " is "  << answer  << endl;
		               break;
        }
        cin  >> letter;
    }

    return 0;
}