0 like 0 dislike
4.1k 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
| 4.1k 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:104.23.197.65
©2016-2026

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
| 4.2k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 6.4k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users