englpleq.cpp

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// englpleq.cpp
// overloaded '+=' assignment operator
#include <iostream>
using namespace std;
////////////////////////////////////////////////////////////////
class Distance                     //English Distance class
   {
   private:
      int feet;
      float inches;
   public:                         //constructor (no args)
      Distance() : feet(0), inches(0.0)
         {  }                      //constructor (two args)
      Distance(int ft, float in) : feet(ft), inches(in)
         {  }
      void getdist()               //get length from user
         {
         cout << "\nEnter feet: ";  cin >> feet;
         cout << "Enter inches: ";  cin >> inches;
         }
      void showdist() const        //display distance
         { cout << feet << "\'-" << inches << '\"'; }
      void operator += ( Distance );
   };
//--------------------------------------------------------------                                     
                                   //add distance to this one
void Distance::operator += (Distance d2) 
   {
   feet += d2.feet;                //add the feet 
   inches += d2.inches;            //add the inches
   if(inches >= 12.0)              //if total exceeds 12.0,
      {                            //then decrease inches
      inches -= 12.0;              //by 12.0 and
      feet++;                      //increase feet
      }                            //by 1
   }
////////////////////////////////////////////////////////////////
int main()
   {
   Distance dist1;                 //define dist1
   dist1.getdist();                //get dist1 from user
   cout << "\ndist1 = ";  dist1.showdist();

   Distance dist2(11, 6.25);       //define, initialize dist2
   cout << "\ndist2 = ";  dist2.showdist();

   dist1 += dist2;                 //dist1 = dist1 + dist2
   cout << "\nAfter addition,";
   cout << "\ndist1 = ";  dist1.showdist();
   cout << endl;
   return 0;
   }