0 like 0 dislike
3.1k 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
| 3.1k 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:172.70.131.189
©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
| 3.1k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 4.8k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users