0 like 0 dislike
2.1k 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
| 2.1k 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:172.69.6.235
©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
| 2.1k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 3.2k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 670 views
12,783 questions
183,442 answers
172,219 comments
4,824 users