0 like 0 dislike
2.5k 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
| 2.5k 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:172.70.179.156
©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
| 2.5k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 3.7k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 892 views
12,783 questions
183,442 answers
172,219 comments
4,824 users