0 like 0 dislike
3.2k 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
| 3.2k 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:172.69.7.60
©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
| 3.2k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 4.9k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users