0 like 0 dislike
3.6k 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
| 3.6k 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:104.23.197.94
©2016-2026

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
| 3.6k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 5.5k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users