0 like 0 dislike
1.9k 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
| 1.9k 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:172.69.6.253
©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
| 1.9k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 2.8k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 609 views
12,783 questions
183,442 answers
172,219 comments
4,824 users