0 like 0 dislike
4k 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
| 4k 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:104.23.243.108
©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
| 4k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 6.1k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.4k views
12,783 questions
183,442 answers
172,219 comments
4,824 users