0 like 0 dislike
3.5k 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
| 3.5k 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:104.23.197.95
©2016-2026

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
| 3.6k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 5.4k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.2k views
12,783 questions
183,442 answers
172,219 comments
4,824 users