0 like 0 dislike
3.2k 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
| 3.2k views

17 Answers

0 like 0 dislike
Hidden content!
#include ***** ** **



using ** * * std;



// Base class

class Shape *** *



public:
**** * *** * ** * ** pure virtual function * * ** *
** **** * ** * int * = 0;


** ** ** ** **** * * *** * w) {
*** ** ** **** **** * * * * * = w;
*** * * * **** ***


*** * * ** * ***** * ** * * h) {
*** ** * * ** * *********** * ** * = h;
* * ***** * **


**
****** * * * * **** width;
* *** ** ** * *** height;

};



// Derived classes

class * * * public Shape {



public:
*** *** **** ** * * * * ** {
** * ***** * ** * * *** * * * * * (width * height);
* ** * **

};



class ** * public Shape {


** *
** ** ** ***** * * ** ** {
* **** ** * * * ****** * * **** * ** **** * (width * ** **
** ** * **********

};



int *** {
* ** * * ** * ** * * * ** Rect;
********** * **** * ** * *** *
* ****** * * ** w,h;
* * * **** * *** * ** ** * ** ** *
**** ** **** *** ** *
****** * * * *** ** * ** ***
** *** * * * ****** ***** *** ** *** * *
*** * ** ** * *** **
**** * ** * * *** *** **** ****
* ** *** ****** Print the area of the object.
** ** * ** **** * * * ** * ** * ** ****** ** * * * * * ** ** *** * * * * endl;
* ** * * *** ** * * 0;

}
answered by (-48 points)
0 like 0 dislike
Hidden content!
** ** *

using * ** std;

// Base class

class Shape

{

public:
* * ** * ** ** Your code: pure virtual ** * * ***** ** **
** * ** ** **** * ** * *** * and * * * w) and *** ** h) ** here
* * * *** ** ** * * *** ** x);
* ** * ** * * * ** * * * * ** y);
*****
* * * * * ** * width;
* * * ** ** *** * height;

};

// Derived classes

class * * *** public Shape

{
****
* * *** **** ***** *** Your code: ** **** *** ** **
** *** * * *** ** *** **
**** * * ** * **** * * * * return * ** *
* * *** ** *

};

class * * public Shape

{
* *
* ** *** ** ** ** * Your code: * *** ** **** * * * * *
* * ** * * * **** *** * * *
* * ** *** * * * * return *** **** *
*** ***** *** * * *

};
** * *

int * * * ** x){
*** *** * * width = x;

}

int * **** ***** y){
**** * ** * height = y;

}



int * *

{
* ** * *** * * ** Rect;
* * * ** ** ** ** *** *
*** **** *** * * ** * * w,h;
* * ***** * ** * * * ***** ** ** ** * * *
** **** ** * * * **** **
** * ** *** ***** *******
**** * * ** *** * **** * ** *
** * *** ** ** * * * **
*** ** *** * ** ** * ***
* ** * ** ** * *** * * * * ** * *** * * * **** * *** * ** * * ** ** * endl;

* *** *** ***** 0;

}
answered by (-134 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 (-581 points)
0 like 0 dislike
Hidden content!
#include * ** * * *

using namespace std;

// Base class

class Shape

{

public:
** * ** setWidth(int W)
* * * *** ** *
****** * *** ** * *** ** *** **** * * * ***
** * ** * * * * *
*** * **** ***** * ** setHeight(int H)
* * * ******
* ** * ** ** * ****** * * ** *** * * ** * ** * *
* * * * *


*** * ** **** *** getH(void)
* * * * * * **
** * * ** * * * * * ******* ** height;
** * **** * * ** **
* * * ** * * * getW(void)
* ** ** ***
* ** * *** * ** * ****** * * * * * ** * ** width;
** ** ** * *** **



private:
* *** ** ** * width;
*** * * * * ** * height;

};

// Derived classes

class Rectangle: public Shape

{

public:
* * * *** ******* Your code: * * * ** * *** * getArea()
* * ** ******** getArea()
* ** * ***** * *
** * * * * ********* ** * * ** * * *** ** * *** * ******
*** * * ** * *

};

class Triangle: public Shape

{

public:
** *** ** * **** * * Your code: ** * * **** getArea()
* * * * * ** * ** getArea()
* * * * ** **
* * **** ***** *** * * ** *** ** * * * **** *** * * * *
* * ** **

};

int main(void)

{
***** * * ** * *** * * * Rect;
**** *** * * **** **  Tri;
**** * * *** * w,h;
* * *** *** ** ** * ** ** * * *** ** *
****** ** * * ** * ****
** * * * * ********** * **
* ** * * * * * * * * * *** * ** * *
***** * *** * ** ******
**** * * *** * ** * * *
*** **** * ** **** * * Rect.getArea() *** ** * * * ********* ** ** * Tri.getArea() ***** ** endl;
* * * * ** ** **** 0;

}
answered by (-324 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 (-384 points)
0 like 0 dislike
Hidden content!
#include * * * **** * *****

using namespace std;

// Base class

class Shape

{

public:


*** * * ** * *** * setWidth(int w)
*** * ** * *
** *** * * * * * ** *** ** * ** * ** = w;
* * ** **** ***
* ** *** * ** ** ** * h)
* * **** **** ****
*** *** ** * **** * * ** * * ******* ** = h;
* * * * **

protected:
**** * * **** * width;
* ** ** ** ** * height;

};

// Derived classes

class Rectangle: public Shape

{

public:
* * * ****** ** getArea()
* * * *** ** **
* * * * ** ** * *** * * * * * * * ** * * * * *****
* **** * ** *

};

class Triangle: public Shape

{

public:
* * **** ** * ** getArea()
*** * ** ********
****** ***** * ** * * * * ***** * * * **** ********
* **** * * **

};

int main(void)

{
****** * ***** **** * ** * Rect;
* * * * *** * * ** * *
* **** ** * *** ** *** w,h;
** * ** * * ***** * * * *** ** * ****
** * * * * * * * ** *** * ****
* *** *** ** ** * *** *****
* ******** ***** * ** **
*** ***** ***** **** ** *
* ** * ** * ** *******
**** **** ** ***** *** ** * *** ** ** * * * *** * * ** ** * * * ***** * Tri.getArea() * *** endl;
***** **** * * * *** 0;

}
answered by (-364 points)
0 like 0 dislike
Hidden content!
#include ** * * ** ** * **

using namespace std;

// Base class

class Shape

{

public:
* * *** * * Your code: pure virtual function * ** * interface * * *
* * * * * * ** * ** and * ****** w) and * ** h) * *** here
* ** * ** * ** int * * * = 0;


********* * *** *** ** w){
* * ** ** ** ***** ** ** * ** ** = w;
* * * ** * *
* * * * * ** * * h){
*** * * *** ** * * * ** ** *** * ** * **** *** * ** *** = h;
** * * ** ** * **


* *
** * ***** * ** ** * width;
* ** * * * ** ***** * height;

};

// Derived classes

class *** ** public Shape

{

public:
* * * *** ** ** Your code: * **** * * * ** * * *
** * *** ** ** **
* * * * ***** ** * ** ****** **** * **** * * width * height;
* **** ****

};

class * public Shape

{

public:
** **** * * * * * Your code: *** **** **** getArea()
* * ** *** * *
* * **** * * * * ** * **** * * * * * ** width * height / 2;
* *** ** * ** *

};

int * *

{
* * * ** ** ** ** Rect;
* *** ** * * ** * *
* ** * ** w,h;
* *** * *** *** * *** * ** * *
* * * ** * *** * ******* * **
*** ** * *** **** * ***
* *** * **** * * **** * ** ** *
* * *** * ****** * * *
* **** ** **** * ***
*** ** * * ** ** **** * * ***** **** *** * * * ****** ** * *** ** ****** * * endl;
*** ** **** * ***** 0;

}
answered by (5.2k points)
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.69.59.248
©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
| 3.2k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 4.9k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 1.1k views
12,783 questions
183,442 answers
172,219 comments
4,824 users