0 like 0 dislike
2.8k 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
| 2.8k 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:172.70.131.12
©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
| 2.8k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 4.3k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 974 views
12,783 questions
183,442 answers
172,219 comments
4,824 users