0 like 0 dislike
3.1k 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
| 3.1k 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:172.69.214.39
©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
| 3.1k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 4.8k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users