0 like 0 dislike
1.2k 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
| 1.2k 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:172.70.131.140
©2016-2024

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
| 1.2k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 1.8k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 381 views
12,783 questions
183,443 answers
172,219 comments
4,824 users