0 like 0 dislike
1.7k 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
| 1.7k 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:108.162.216.90
©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
| 1.8k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 2.5k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 558 views
12,783 questions
183,442 answers
172,219 comments
4,824 users