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:162.158.154.143
©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
| 988 views
12,783 questions
183,442 answers
172,219 comments
4,824 users