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:162.159.115.10
©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
| 3.7k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 5.6k 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