Use Double value as the constructor parameter

  

#include <iostream>
using namespace std;

class MyClass {
  double l, w, h;
  double volume;
public:
  MyClass(double a, double b, double c);
  void vol();
};

MyClass::MyClass(double a, double b, double c)
{
  l = a;
  w = b;
  h = c;

  volume = l * w * h;
}

void MyClass::vol()
{
  cout << "Volume is: " << volume << endl;
}

int main()
{
  MyClass x(2.2, 3.97, 8.09), y(1.0, 2.0, 3.0);

  x.vol();
  y.vol();
  return 0;
}

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Use Double value as the constructor parameter : Constructor « Class « C++

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