0 like 0 dislike
2.9k 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
| 2.9k 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:108.162.241.184
©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
| 2.9k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 4.5k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users