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:172.70.126.8
©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