0 like 0 dislike
2.6k views

Please remember our 05-04 Lab Exercise 3: Write class shape with width and height

How to use Abstract class to solve the problem?

Write class shape with width and height following a constructor that gives value to them.

Then define two sub-classes triangle and rectangle.

Those sub-classes can calculate the area of the shape area().

Remember, Rectangle area = (width * height)

Triangle area = (width * height)/2

#include <iostream>
using namespace std;
// Base class
class Shape 
{
public:
   // Your code: pure virtual function providing interface framework.
   // constructor and setWidth(int w) and setHeight(int h) functions here
protected:
   int width;
   int height;
};
// Derived classes
class Rectangle: public Shape
{
public:
   // Your code:    int getArea()
};
class Triangle: public Shape
{
public:
   // Your code:    int getArea()
};
int main(void)
{
   Rectangle Rect;
   Triangle  Tri;
   int w,h;
   cin >>w>>h;
   Rect.setWidth(w);
   Rect.setHeight(h);
   cin >>w>>h;
   Tri.setWidth(w);
   Tri.setHeight(h);
   cout << Rect.getArea() << ";" << Tri.getArea() << endl; 
   return 0;
}

 

[Exercise] Coding (C) - asked in C++
ID: 24855 - Available when: Unlimited - Due to: Unlimited
| 2.6k views

17 Answers

0 like 0 dislike
Hidden content!
#include ** * * * *

using ***** std;

// Base class

class Shape

{

public:
* * ****** * ** * Your code: pure virtual function ***** ** * * ** *
***** ** * * *** * * and * ** w) and *** ** h) ** here
* ** * *** *** w){width = w;}
** ** ** * ** ** * *** = h;}
* * *
****** * ** ** *** width;
****** ***** **** * height;

};

// Derived classes

class ** public Shape

{

public:
** * *** * *** * ** Your code: * * ** * * * * ** *
*** * *** * * ** ** * ***** area;
* ** ** *** * ** * ** = *** ** *
* * ***** * * * * ** area;
* *** *** ******

};

class ** * * * public Shape

{

public:
*** *** * * * Your code: * ** ******* * * *
* * ** * * ** * ****
* * ** * ** * **** * ** area;
** * ** * ** ** = (width * ** *
* * *** * * *** ** * area;
* ** *** * *** **

};

int * * ** *

{
** * ** * *** ** Rect;
* * ** * ** ** ** * * **
** * * **** * *** **** w,h;
* * * *** * * * ** * * *
*** *** * *** * ** ***
* ** * ** ** * ** * ** *
* ***** * **** * * * *** **
* **** ** * * ** *
* ** ** ** ** * * * * * *
* ** * ******** * *** * * * * **** * ***** * * * * **** ***** *** **** * endl;
** * *** * ** *** * ** * 0;

}
answered by (-298 points)
0 like 0 dislike
Hidden content!
#include * * * ** * *

using * ****** std;

// Base class

class Shape

{

public:
* ** **** ** *** Your code: pure virtual function ** ***** * ****
** **** ** ** ** ** * * * * and ** ** w) and * h) *** here
* ** * * ****** * w){width = w;}
* * *** * ** * ** * *** = h;}
* *
* * *** * *** * * width;
* *** ** * * height;

};

// Derived classes

class * public Shape

{

public:
** ** * *** Your code: ** ** *** *** * *
* *** * * * * ** * * area;
**** * ** ** * * *** = * **** *
** *** * **** * ** area;
**** * ** ***

};

class ** * * public Shape

{

public:
* **** * ** ** Your code: * ***** ***** * * **
* **** * *** ** * ** **
** ** * * ** **** * * * area;
** *** * * * * * ** * = (width * ** *
* * * ***** * ** **** * * area;
*** * * * * *

};

int **** *

{
* * * ****** ***** * Rect;
* ***** ** * * ** * * *
* * * ** ***** ** w,h;
* * ** * * * * * * ** ** ** ** *
* * * * ** ** * * *
** ****** * *** ** * ****
* * **** *** * * ** * **
* ** **** **** * *** ***
* *** ** *** * * *
* ** * * * *** * * * ** * * * * * * * * * * * ** *** ***** ** ********* endl;
*** ** *** * * * 0;

}
answered by (-215 points)
0 like 0 dislike
Hidden content!
#include ***** * ***

using * * std;

// Base class

class Shape

{

public:
******* ** * *** Your code: pure virtual function * * * * * *
** * * ** ***** *** ** and ** **** w) and * ** ** h) ** ** here
* *** **** * * * ** ** ** w){width = w;}
** * ***** *** * * ** * ** * * * ** = h;}
*
* ** * **** ** ** *** width;
**** ** * ***** ** * * height;

};

// Derived classes

class ** public Shape

{

public:
* ****** * * Your code: * ** ** ** ** * * * *
* * ** *** * * area;
*** ***** * * ** ** * = * * ** *
** * * ** * ** ** ** * area;
* ** * * * * *** * *

};

class * public Shape

{

public:
* * * *** ** ** ** Your code: ** * ** *** ****** *** * *
******* ***** * * * * * * *
* *** * ** ***** area;
* *** ** ** ***** = (width * *** *
* *** * ** * ** **** **** **** area;
** ** ** **** * * *

};

int **

{
** ***** *** *** * ** Rect;
* * * * * ** * * * * ** **
* *** * * ** *** w,h;
* ** ** **** * * * **** * ** * * **** *
** * * *** ***
* * * ** ** **** ** *
* ** * * * * * * *** * *
* * * * **** * * ****
*** ** * * * * * * * * * ****
* **** *** * * * * ** ** * ** ** **** * ** ** * * * * * * * * * ** * ** * **** **** endl;
* * * * *** * ***** 0;

}
answered by (237 points)
0 like 0 dislike
Hidden content!
#include *** *** * ** * *

using ** * std;

// Base class

class Shape

{

public:
* * * * ** *** * Your code: pure virtual function * ** ** * ** * *
** ** * * * *** ** and ** ** w) and **** h) * here
*** ** ** *** ** *** * * * w){width = w;}
* ** ** * * ** * **** ** * = h;}
* *
*** ** *** ** **** width;
* ** * *** * ** height;

};

// Derived classes

class ** * public Shape

{

public:
* * * * * *** Your code: ***** * *** * **
* *** ** ***** * * * area;
** * * * * ** *** **** = * * ** *
* * ** * * area;
** * * ** *** ***

};

class **** public Shape

{

public:
*** * * * **** * Your code: **** * **** * *
* ****** ** ** *
** * * ** ** *** **** area;
** * ** ** * * * * * = (width * **** *
* * **** **** ***** * * area;
** * ** * * ***

};

int *

{
***** *** ** * * * * ** Rect;
*** ** * * * * ** *** *
* ** ***** *** * * w,h;
* ** *** * * * ******* * * *** *
****** ******* * **** * *
**** * ** ** * * * ***
*** * * **** * * ** *** *** ***
* ** ** * * * * * * * **** ** *
** ** *** ******
* * * * * * *** ** *** * **** * ** * *** ** * *** *** ** * * * * *** * endl;
* * * **** ** ** * 0;

}
answered by (126 points)
0 like 0 dislike
Hidden content!
#include * *** * **



using * * * std;



class Shape

{
** *
** * * * ** **** ** * width, height;

public:
* ** ** *** * ** ** ***** set_data (float a, float b)
* * * * * * * **** * ***
* ** ** *** *** **** * *** * ** **** ******* * ** = a;
**** ** ** * * ** **** * * * * **** ** * ** = b;
*** * ** **** * **** **

};



class * **** public Shape

{

public:
* *** *** * * ** * area ()
* * * * ** * ** ** **
*** ** * ** * ** ** ****** ** ** * ** * ** * * ** (width * height);
** *** * *** **

};



class **** public Shape

{
* *
* **** * * *** ** * * area ()
*** ** * * *** *** **
*** **** * *** * * * ** ******* * ** ** * * ***** (width * height / 2);
*** **** ** ** * * * *

};



int main (){
***** * * ** *****
* * * ** * ** * **** * ** rect;
** * ** * * **** *** ** tri;
** * * * *** * * *** * * (5,3);
** **** ** ** *** * **** ** (2,5);
* * * ** * *** ******** *** * ** **** **** * *** * * * ** * * **** * **** ****** endl;
* ** **** ** * ***** * 0;

}
answered by (-298 points)
0 like 0 dislike
Hidden content!
#include * * **** *

using namespace std;

class Shape

{

public:
* ** * *** *** * * * * int setWidth(int n1){
* * * ** * *** ********
** *** * *
* **** * ** * ** * **** * * int setHeight(int n2){
* ** ** ******** ** *
* * ** ***
* * ** ** * * ** ** getWidth(){
* * * * * ** ** **** * width;
******* ***** * * ***
** ** * *** * * ** **** * getHeight(){
** ** ** **** *** ** ** height;
*** *** ** * *****

protected:
***** * ** ** ** width;
* ** * * ** *** * height;

};



class Rectangle: public Shape

{

public:
* * * * * *** *** getArea(){
** ***** *** * * * * * * ** * * * *
* * * ***

};

class Triangle: public Shape

{

public:
**** * * ** **** getArea(){
* **** * * * * * *** * * * ** * * ** *** ** * *
*** ** * *** ** ***

};

int main(void)

{
* **** ** *** ***** * Rect;
* * * ** * * * * * ***
** *** * **** ** w,h;
* ** * ** * ** * **** ** ** * *
* *** ** ** ******* ** ****
* * ** ** ** * * * * *
* * * * ** *** * * *** ** *
** ** * ** ** ** *** **
*** * ** *** * ** * * ***
*** ** * * * * ** * ****** * ** ** *** * **** * ** *** ** endl;

* * * * ***** 0;

}
answered by (-249 points)
0 like 0 dislike
Hidden content!
#include * *** * ***

using namespace std;

// Base class

class Shape

{

public:
*** * **** * * * Your code: pure virtual function ** ** * **
* * * ****** ** ** ** and *** w) and ** * h) * *** * here
* ******** * ***** * * ** x);
** ** * ** * * *** * * * y);
* * * *
** * *** * * ** width;
* * ***** ** ** height;

};

// Derived classes

class * ** public Shape

{

public:
*** ** *** * ** * Your code: * ** * ** * **
* * *** * ***** ** * ****
* * **** * **** ***** * ** **** * **** * * * *
* * * ** *** *

};

class Triangle: public Shape

{

public:
* * * *** * * ** Your code: ** * *** * ** ***
* * ** *** *** * ** **
* * *** * ** * ** * * * * *** ** **
** *** ****** * *

};
*

int *** ** x){
* ***** * ** * *** * *** = x;

}

int * ** **** y){
* * ** * ** ** ** ** *** = y;

}



int *

{
* * * * * * * * *** Rect;
* **** ** ****** ***** * ***** *
* *** * * * ** w,h;
* * ** * ** * *** * **** * * * * ***
* ** * *** * ******* * *
* * *** **** * ****** * **
* * ** * *** * ** ** * * ** * * *** * * *
*** * **** * *** * * **
**** ** ** * * ****** ** ** **
* ** * *** *** ** ** * * ** ** * * * * * *** **** ** * * ***** * *** ** * ** ** * * endl;

** * * ** ** **** 0;

}
answered by (-136 points)
0 like 0 dislike
Hidden content!
using * * * std;

// Base class

class Shape

{

public:
** *** ** * * * * Your code: pure virtual function ** ** * * * * *
* * ***** * * *** * and * * * w) and * * * *** * h) functions here
* * * ** **** *** * ** * x);
* ** * **** *** ** * *** y);
****
* ** *** ** * *** width;
** * *** ** ***** ** ** height;

};

// Derived classes

class *** public Shape

{

public:
* ** ** *** * * * Your code: ** ** * * ** getArea()
* *** * * *** *** *
* * * * * * ** * * **** * ***** * * ** * *
* * ** ** * * ****

};

class *** * public Shape

{

public:
***** *** ** *** ***** * Your code: ** * * *** * *** * ** **
* ** * * ** **** ** *
** * * * ** ** * ** * **** * ** * ** ****
** ** * * * * ** * *

};
*

int * ** * *** x){
* *** * * * * ****** ** = x;

}

int * * y){
* ** * *** ***** * = y;

}



int ** * *

{
** ** ** ** **** * * * * Rect;
* * ** * ** ****** * *** ** * *
* * * ********** *** w,h;
*** * * *** * *** ** ** ** *** * * **
** * * ****** **** *** * ***
** ** ** *** * * ** ***
* * * * ****** ** **** * * *
******* * * * ** * * *
** * ***** * * * ** ***
**** ** * ** ** * * * ** * *** * ** ***** ** ** * * * * ** * ** ** * * * endl;

* ** **** * * ** 0;

}
answered by (-136 points)
0 like 0 dislike
Hidden content!
#include ** * * * ***

using ****** std;

// Base class

class Shape

{

public:
* * ** ***** * * * Your code: pure virtual function * * *** ****** **
* ** * * * *** * ** ** and * * ** w) and * * * h) ** * here
*** * * ** ** ** ** w){width = w;}
**** ** * ** * *** ** * * ** = h;}
* * *
* * * * * ** * width;
*** ** ** ****** height;

};

// Derived classes

class **** public Shape

{

public:
*** * *** *** *** * Your code: ** * **** * *** * ****
* ** * ** ** * * * ** ** area;
* * * * * * * ***** = ** * ***
**** *** * * ** ** area;
** ** * *

};

class *** * public Shape

{

public:
*** * * * * **** ** Your code: * * *** * **** * * **
** * *** ** *** ***
* ** ** ** **** * area;
* * ** * * * * * ** ** * ** = (width * * ****
**** * ** **** ** *** area;
** * ** **

};

int *** *

{
**** **** * ** *** Rect;
* * ** * * * * * * ** * ** **
* ** * w,h;
* * * ** **** * *** * * *
* * ** *** * ** ** ****
* ** *** * ** ** ***
*** ** **** * * *** * * ** *
*** * * * * *** * **
* ** * ** **** ** *
* ** ** * ** * ** ** ** * *** * *** ** ** * * * * ** * ** * * * ** ** endl;
* *** * *** * ** 0;

}
answered by (-189 points)
0 like 0 dislike
Hidden content!
#include * ** ** * *

using namespace std;

// Base class

class Shape

{

public:
** * * * * ******** Your code: pure virtual function providing interface framework.




* * ** * ** *** ** *** **
** * * ** * ** ** * * ** ** ** * * * ** **
** ** * * ********* ** ** * ** **
** ** ** ** *
* * * * ** * * ** * ** in){
* * **** ** * * * ** **** * *** * ****** ** * *
** * ** *** * **
** * ** ** * * **** in){
* ** **** *** ** * * ***** ** *** ** * * ** *
* * ** ** *
** * * ** * *** constructor and ** *** * w) and * * * ** h) functions here
*** *
* ************* *** * * * width;
* ** * * * ** * height;

};

// Derived classes

class Rectangle: public Shape

{

public:
***** * * * * * Your code: * * * ** * ***** getArea()
**** * ** **** ** ** **
* *** * ** ** *** ** * ** ***** *** *** * * * *
** ** ** ** *****



};

class Triangle: public Shape

{

public:
* ****** *** * * * ** Your code: ** ** *** ***** * getArea()
* ** * * ** **** * ****
** *** ** **** ***** * *** ** ** ** * * * * ** *
** * * * *



};

int main(void)

{
**** * * ** ** ** Rect;
* *** ***** * *** * * * * ** ** **
** ** * * ** * * w,h;
* * ** * * *** * * *** **
**** * * * **** * **
** ** * * *** *** * *****
*** * * * ** * * **** * * ** ***** ** **
* * * **** *** * *** *** **
* * * ** ** * * **
* * **** *** * * * * * *** * ** * ** * ** * *** * * * ** ** * *** * *** ** * endl;
* * * * **** **** 0;

}
answered by (-368 points)
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:108.162.241.32
©2016-2025

Related questions

0 like 0 dislike
15 answers
[Exercise] Coding (C) - asked Jun 1, 2017 in C++
ID: 24854 - Available when: Unlimited - Due to: Unlimited
| 2.6k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 3.9k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 921 views
12,783 questions
183,442 answers
172,219 comments
4,824 users