I just started working with C++ and am working on an exercise that deals with polymorphic pointers. I'm having trouble trying to solve an error message I believe I'm getting from my Rectangle.cpp
as I call the class from my main.cpp
.
The error message:
undefined reference to 'Rectangle::Rectangle(double, double)'
Main.cpp
#include <iostream>
#include "Rectangle.h"
using namespace std;
//////////////////////////////////////////////
// --- FUNCTIONS DECLARATION---
void introduceShape(Shape*);
double calculateShapeArea(Shape*);
double calculateShapeCircumferece(Shape*);
int main()
{
Rectangle rectangle1(5,2);
// Rectangle *rec1 = new Rectangle(5,2);
introduceShape(&rectangle1);
cout << "My area is: " << calculateShapeArea(&rectangle1) << ", my circumference is: " << calculateShapeCircumferece(&rectangle1) << endl << endl;
return 0;
}
//////////////////////////////////////////////
// --- FUNCTIONS ---
void introduceShape(Shape* shapeToIntroduce)
{
return shapeToIntroduce->introduce();
}
double calculateShapeArea(Shape* shapeToCalculate)
{
return shapeToCalculate->calculateArea();
}
double calculateShapeCircumferece(Shape* shapeToCalculate)
{
return shapeToCalculate->calculateCircumference();
}
Rectangle.h
#ifndef RECTANGLE_H_INCLUDED
#define RECTANGLE_H_INCLUDED
#include "Shape.h"
#include <iostream>
using namespace std;
class Rectangle: public Shape
{
double width;
double height;
public:
Rectangle(double , double );
void introduce();
double calculateArea();
double calculateCircumference();
};
#endif // RECTANGLE_H_INCLUDED
Rectangle.cpp
#include "Rectangle.h"
#include <iostream>
using namespace std;
Rectangle::Rectangle(double width, double height)
{
this->width = width;
this->height = height;
}
void Rectangle::introduce()
{
cout << "I AM A RECTANGLE !" << endl;
}
double Rectangle::calculateArea()
{
return width*height;
}
double Rectangle::calculateCircumference()
{
return 2*(width+height);
}
Shape.h
#ifndef SHAPE_H_INCLUDED
#define SHAPE_H_INCLUDED
class Shape
{
public:
virtual void introduce() = 0;
virtual double calculateArea() = 0;
virtual double calculateCircumference() = 0;
};
#endif // SHAPE_H_INCLUDED
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