0 like 0 dislike
1.8k 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
| 1.8k 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:172.69.59.240
©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
| 1.8k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 2.5k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 563 views
12,783 questions
183,442 answers
172,219 comments
4,824 users