Question: C++ learning about classes, this includes Lab01.cpp , Box.h , Box.cpp //Box.h: // Box class definition class box { public: box();// Constructor - null box(int,int);//
C++ learning about classes, this includes Lab01.cpp , Box.h , Box.cpp
//Box.h:
// Box class definition
class box
{ public:
box();// Constructor - null
box(int,int);// Constructor - parameters
~box();// Destructor
bool get(istream &in);// Input dimensions
void put(ostream &out);// Output dimensions
intarea();// Calculate area
intperimeter();// Calculate perimeter
private:
int height,width;// Dimensions
};
_____________________________________________________________________________
//Box.cpp:
#include
using namespace std;
#include "Box.h"
/**************************************
* Constructor - no parameters
**************************************/
box::box()
{ cout << "Box " << this << " created ";
height = 0;
width = 0;
}
/**************************************
* Constructor - all parameters
**************************************/
box::box(int h,int w)
{ cout << "Box " << this << " created ";
height = h;
width = w;
}
/**************************************
* Destructor - optional
**************************************/
box::~box()
{ cout << "Box " << this << " destroyed ";
}
/**************************************
* Get
**************************************/
bool box::get(istream &in)
{ in >> height;
in >> width;
return in.good();
}
_________________________________________________________________________________
//Lab01.cpp:
// with step three uncommented
#include
using namespace std;
#include "Box.h"
/***********************************
* Main()
***********************************/
void main()
{ class box a,b,c;
// Step 3
// Display empty boxes
cout << "a = ";
a.put(cout);
cout << endl;
cout << "b = ";
b.put(cout);
cout << endl;
cout << "c = ";
c.put(cout);
cout << endl;
/**/
/** Step 6
// New boxes
a = box(3,5);
b = box(4,6);
**/
/** Step 7
// Display boxes
cout << "a = ";
a.put(cout);
cout << endl;
cout << "b = ";
b.put(cout);
cout << endl;
**/
}
1..You should get a link error - the put() function is missing.
Severity
Code
Description
Error
LNK2019
unresolved external symbol "public: void __thiscall box::put(class std::basic_ostream
Add a put() function to Box.cpp that will output the dimensions of the box in the form height x width.
Examples: "3x5" or "4x6"
Lastly, Compile the program and run project again. Uncomment the section for step 6.What do you think the two extra pair of constructor/destructor messages represent?Uncomment the section for step 7 so you can output the new values of the boxes.
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