0 like 0 dislike
1.7k 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
| 1.7k 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:172.71.255.88
©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
| 1.7k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 2.5k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 536 views
12,783 questions
183,442 answers
172,219 comments
4,824 users