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:162.159.115.9
©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