0 like 0 dislike
4.1k 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
| 4.1k 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:104.23.243.109
©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
| 4.1k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 6.2k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users