0 like 0 dislike
3.9k 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
| 3.9k 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
| 4k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 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