0 like 0 dislike
2.8k 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
| 2.8k 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:108.162.241.33
©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
| 2.8k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 4.3k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 970 views
12,783 questions
183,442 answers
172,219 comments
4,824 users