CODEWITHSUNDEEP
c++qtcompiler-errors
ana
ana

Reputation: 1

C++ compiler error definition of implicitly declared

Hello everyone having anissue with my code today. I have created a program calculating area of square circle and rectangle. With a base class of shape. Where the UML has shape as the abstract class with public area():double, getName():string,and getDimensions:string, rectangle derived from shape with protected height, and width, and a public rectangle(h:double, w:double), followed by a derived square from rectangle with just a public square(h:double), and finally a circle derived from shape with a private radius, and a public circle(r:double). So far have gotten far in my code yet in my shape.cpp file am getting an error on line 10 that says shape.cpp:10: error: definition of implicitly-declared 'constexpr shape::shape()' shape::shape()

here is a link to my complete code: https://gist.github.com/anonymous/0eedd7719a34655488fb

shape.cpp file:

#include "shape.h"
#include "circle.h"
#include "rectangle.h"
#include "square.h"
#include <QDebug>
#include <QString>
#include <iostream>
using namespace std;

shape::shape()
{

};

your help is appreciated

Upvotes: 0

Views: 11684

Answers (1)

user3148225
user3148225

Reputation: 425

You need to add the shape() constructor to your class declaration like this:

#ifndef SHAPE_H
#define SHAPE_H
#include <QString>
#include <QDebug>

using namespace std;

class shape
{
public:

    shape();
    virtual double area()=0;

    virtual QString getName()=0;
    virtual QString getDimensions()=0;

    virtual~shape(){}

};
#endif

You can then create the definition in shape.cpp like this:

shape::shape()
{

}

without a semicolon at the end.

Upvotes: 4

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