Surface Area / Volume

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0

I'm trying to get this code to work to calculate surface area and volume of a box. It compiles but doesn't output the correct data. I think maybe the problem is within the void Box:: parts but have hit a wall. Or it could be the Height = Height but I couldn't get it to run without error any other way.

Here is the code:

#include <iostream>
#include "Box.hpp"

using namespace std;


int main()
{
    Box box;
    double boxHeight, boxWidth, boxLength;

    cout << "This program will tell you the surface area and volume of a box" << endl;
    cout << "Please enter the height " << endl;
    cin >> boxHeight;
    cout << "Please enter the width " << endl;
    cin >> boxWidth;
    cout << "Please enter the length" << endl;
    cin >> boxLength;

    box.setHeight();

    cout << "The surface area is " << box.getSurfaceArea() << endl;
    cout << "The volume is " << box.getVolume() << endl;


    return 0;
}

void Box::setHeight(){
    if(Height< 0)
        cout << "Error.  Must enter a positive number " << endl;
    else
        Height = Height;
    }


void Box::setLength(){
   if(Length< 0)
        cout << "Error.  Must enter a positive number " << endl;
    else
        Length = Length;
    }


void Box::setWidth(){
   if(Width< 0)
        cout << "Error.  Must enter a positive number " << endl;
    else
        Width = Width;
    }


double Box::getSurfaceArea(){

    return 2*(Length*Width) + 2*(Length*Height) + 2*(Width + Height);
}



double Box::getVolume(){

    return Length*Width*Height;
}

And the hpp file is this:

#ifndef BOX_HPP_INCLUDED
#define BOX_HPP_INCLUDED

class Box
{
public:
    void setHeight();
    void setWidth();
    void setLength();
    double getVolume();
    double getSurfaceArea();

private:
    double Length;
    double Width;
    double Height;
};


#endif 

asked 1 min ago

cppfan

6

Surface Area / Volume