CODEWITHSUNDEEP
c++classderived-class
singaling
singaling

Reputation: 1

Printing from a derived class with a base class function

I am trying to print with a function from a function in a derived class with a function from the base class within it and I am not exactly sure if I should be how I can print out both information from the Shape toString function and the Rectangle toString function.

#include <iostream>
#include <sstream>
#include <string>

using namespace std;

class Shape
{
public:
    Shape(double w, double h);
    string toString();

private:
    double width;
    double height;

};

Shape::Shape(double w, double h)
{
    width = w;
    height = h;
}

string Shape::toString()
{
    stringstream ss;
    ss << "Width: " << width << endl;
    ss << "Height: " << height << endl;

    return ss.str();
}

class Rectangle : public Shape
{

public:
    Rectangle(double w, double h, int s);
string toString();

private:
    int sides;

};


string Rectangle::toString()
{
    //
    // Implement the Rectangle toString function
    // using the Shape toString function
    Shape::toString();
    cout << toString();
    stringstream ss;
    ss << "Sides: " << sides << endl;
    return ss.str();

}

// Use the constructor you created
// for the previous problem here
Rectangle::Rectangle(double w, double h, int s)
    :Shape(w, h)
{
    sides = s;
}

The only parts that can be manipulated in the problem are the sections that come after the comments

Upvotes: 0

Views: 220

Answers (1)

simpel01
simpel01

Reputation: 1782

I think the problem is with this line:

cout << toString();

since it is going to recursively call itself and eventually you will run out of stack and get the runtime error.

your implementation should be:

string Rectangle::toString()
{
    // Implement the Rectangle toString function
    // using the Shape toString function
    stringstream ss;
    ss << Shape::toString();
    ss << "Sides: " << sides << endl;
    return ss.str();
}

Also consider making this method const and virtual in the case you want polymorphism to work properly.

Upvotes: 1

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