0 like 0 dislike
1.5k 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
| 1.5k 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:172.70.131.175
©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
| 1.5k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 2.1k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 465 views
12,783 questions
183,443 answers
172,219 comments
4,824 users