/*--------------------------------------------------------------------*/ 
/*  Problem chapter3_101                                              */ 
/*                                                                    */ 
/*  This program will do simple +, -, *, /                            */ 
 
#include <iostream> 
#include <iomanip> 
using namespace std; 
 
 
int main() 
{ 
   //  Declare and initialize variables. 
   int a=0, b=0; 
   char c;
 
   cout << "Enter a formula for an arithmetic operation: ";
   cin >> a >> c >> b ;
 
   /* a loop is optional, see also ex3-101a.cpp */
   while ( !cin.eof() )
   {
     switch(c)
        {  case '+':
             cout << "  " << a << " + " << b << " = " << a+b << endl;
             break;
           case '-':
             cout << "  " << a << " - " << b << " = " << a-b << endl;
             break;
           case '*':
             cout << "  " << a << " * " << b << " = " << a*b << endl;
             break;
           case '/':
             cout << "  " << a << " / " << b << " = " << a/b 
                  << " with remindar " << a%b << endl;
             break;
           default:
             cout << "  I do not understand it." << endl;
         }
      cout << "Enter a formula for an arithmetic operation: ";
      cin >> a >> c >> b ;
    } 
 
   //  Exit program.  
   return 0; 
}