0 like 0 dislike
2.7k 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
| 2.7k 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:172.70.80.21
©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
| 2.7k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 4.2k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 951 views
12,783 questions
183,442 answers
172,219 comments
4,824 users