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:172.70.131.142
©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
| 659 views
12,783 questions
183,442 answers
172,219 comments
4,824 users