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:172.69.17.152
©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
| 3.1k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 663 views
12,783 questions
183,442 answers
172,219 comments
4,824 users