0 like 0 dislike
3.5k 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
| 3.5k 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:104.23.197.94
©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
| 3.5k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 5.3k 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