// File: ex3-2.cpp - the triangle class

#include <iostream>
using namespace std;

class triangle
{
  private:
    double base;
    double height;
    double area;
  public:
// member function prototypes
    void store(double, double);
    void calc_area(void);
    void show(void);
};

// member function definitions
void triangle::store(double b, double h)
{
  base = b;
  height = h;
  return;					// "return" is optional
}

void triangle::calc_area(void)
{
  area = .5 * base * height;
  return;
}

void triangle::show(void)
{
  cout << "base = " << base;
  cout << "\theight = " << height;
  cout << "\tarea = " << area << endl;
  return;
}

int main(void)
{
  triangle t;           // an instance (object) of triangle class
  t.store(1.23,4.55);   // initialize triangle t
  t.calc_area();        // calculate the area of triangle t
  t.show();             // display triangle t data
  return 0;
}