0 like 0 dislike
3.8k 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
| 3.8k 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:162.159.115.10
©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
| 3.8k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 5.8k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users