0 like 0 dislike
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
| 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:172.71.194.232
©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
| 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
| 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
| 631 views
12,783 questions
183,442 answers
172,219 comments
4,824 users