#include<iostream>
using namespace std;

enum DSign { pos, neg }; 
class Distance{
 protected:
  int feet;
  float inches;
 public: 
  Distance() : feet(0), inches(0.0)
  { }
  Distance(int ft, float in) : feet(ft),inches(in)   
  { }
  void getdist()  {
    cout << "\nEnter feet: "; cin >> feet;
    cout << "Enter inches: "; cin >> inches;
  }
  void showdist() const { 
    cout << feet << " : " << inches ; 
  }
};

class DistSign : public Distance  {
 private:
  DSign sign; 
 public:
  DistSign() : Distance()
  { sign = pos; }
  DistSign(int ft, float in, DSign sg=pos): Distance(ft, in){
    sign = sg; 
  }
  void getdist() {
    Distance::getdist(); 
    char ch;                  
    cout << "Enter sign (+ or -): ";  cin >> ch;
    sign = ( ch=='+' ) ? pos:neg;
  }
  void showdist() const {
    cout << ( (sign==pos) ? "(+)" : "(-)" ); 
    Distance::showdist(); 
  }
};
main()
{
    DistSign alpha; //no-arg constructor
    alpha.getdist(); //get alpha from user
    DistSign beta(11, 6.25); //2-arg constructor
    DistSign gamma(100, 5.5, neg); //3-arg constructor
    //display all distances
    cout << "\nalpha = "; alpha.showdist();
    cout << "\nbeta = "; beta.showdist();
    cout << "\ngamma = "; gamma.showdist();
    cout << endl;
    system("pause");
}