Question

C++

Make this class generic so that the sides of the shape may be integer or float.

---------------shape.h------------

class Shape
{
public:
Shape();
virtual int getSide();
virtual bool setSide(int x);
virtual int getArea();
virtual int getPerimeter();
void display();
~Shape();

protected:

private:
int side;

// T_sides[numSides];

};

----------------shape.cpp----------

#include "Shape.h"
#include <iostream>

using namespace std;

Shape::Shape()
{
}

void Shape::display()
{
cout<<"side: "<<getSide()<<endl;
cout<<" area: "<<getArea()<<endl;
cout<<"perimeter: "<<getPerimeter()<<endl;
}

bool Shape::setSide(int x)
{
if(x>0){
side = x;
return true;
}else
return false;
}

int Shape::getSide()
{
return side;
}

int Shape::getArea()
{
return side*side;

}

int Shape::getPerimeter()
{
return side*4;

}

Shape::~Shape()
{
//dtor
}

int main()
{
int num;
Shape s1;

cout<<"Enter side of shape: ";
cin>>num;

if (!s1.setSide(num))
{
cout<<"Please enter a valid side."<<endl;
}

s1.display();
return 0;
}

Answer 1

template <class T>
class Shape {
public:
    Shape();
    virtual T getSide();
    virtual bool setSide(T x);
    virtual T getArea();
    virtual T getPerimeter();
    void display();
    ~Shape();
protected:

private:
    T side;
// T_sides[numSides];
};

#include "Shape.h"
#include <iostream>

using namespace std;

template <class T>
Shape<T>::Shape() {
}

template <class T>
void Shape<T>::display() {
    cout << "side: " << getSide() << endl;
    cout << " area: " << getArea() << endl;
    cout << "perimeter: " << getPerimeter() << endl;
}

template <class T>
bool Shape<T>::setSide(T x) {
    if (x > 0) {
        side = x;
        return true;
    } else
        return false;
}

template <class T>
T Shape<T>::getSide() {
    return side;
}

template <class T>
T Shape<T>::getArea() {
    return side * side;

}

template <class T>
T Shape<T>::getPerimeter() {
    return side * 4;

}

template <class T>
Shape<T>::~Shape() {
//dtor
}

int main() {
    int num;
    Shape<int> s1;

    cout << "Enter side of shape(int): ";
    cin >> num;

    if (!s1.setSide(num)) {
        cout << "Please enter a valid side." << endl;
    }

    s1.display();
    return 0;
}